The AZEK Company Inc. (AZEK) S-1/AIPO registration (amended)

As filed with the Securities and Exchange Commission on June 8, 2020

Registration StatementNo. 333-236325

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

AMENDMENT NO. 2

TO

FORMS-1

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

CPG Newco LLC

to be converted as described herein to a corporation named

The AZEK Company Inc.

(Exact name of registrant as specified in its charter)

1330 W Fulton Street #350

Chicago, IL 60607

877-275-2935

(Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices)

Jesse Singh

Chief Executive Officer

CPG Newco LLC

1330 W Fulton Street, #350

Chicago, IL 60607

877-275-2935

(Name, address, including zip code, and telephone number, including area code, of agent for service)

Approximate date of commencement of proposed sale to the public:

As soon as practicable after the effective date of this registration statement.

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, as amended, check the following box.  ☐

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ☐

If this Form is apost-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ☐

If this Form is apost-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration number of the earlier effective registration statement for the same offering.  ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, anon-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” inRule 12b-2 of the Exchange Act. (Check one):

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act of 1933.  ☐

CALCULATION OF REGISTRATION FEE

(1) Estimated solely for the purpose of calculating the registration fee in accordance with Rule 457(a) under the Securities Act of 1933.

(2) Includes 4,687,500 shares that the underwriters have the option to purchase.

(3) The Registrant previously paid $12,980 of this amount in connection with the initial filing of this Registration Statement.

The registrant hereby amends this Registration Statement on such date or dates as may be necessary to delay its effective date until the registrant shall file a further amendment that specifically states that this Registration Statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933, as amended, or until the Registration Statement shall become effective on such date as the Securities and Exchange Commission, acting pursuant to said Section 8(a), may determine.

EXPLANATORY NOTE

CPG Newco LLC, the registrant whose name appears on the cover of this registration statement, is a Delaware limited liability company. Prior to the effectiveness of this registration statement, CPG Newco LLC intends to convert into a Delaware corporation pursuant to a statutory conversion and change its name to The AZEK Company Inc. as described in the section “Corporate Conversion” of the accompanying prospectus. In addition, a special purpose entity, CPG Holdco LLC, which was formed at the time of the acquisition of CPG Newco LLC solely for the purpose of holding membership interests in CPG Newco LLC and that will continue to hold such interests until the Corporate Conversion, will be merged with and into us. In the accompanying prospectus, we refer to all of the transactions related to our conversion to a corporation and the merger described above as the Corporate Conversion. As a result of the Corporate Conversion, the members of CPG Newco LLC will become holders of shares of Class A common stock and Class B common stock of The AZEK Company Inc. Except as disclosed in the prospectus, the Consolidated Financial Statements and selected historical consolidated financial data and other financial information included in this registration statement are those of CPG Newco LLC and its subsidiaries and do not give effect to the Corporate Conversion. Shares of Class A common stock of The AZEK Company Inc. are being offered by the prospectus.

This information in this preliminary prospectus is not complete and may be changed. These securities may not be sold until the registration statement filed with the Securities and Exchange Commission is effective. This preliminary prospectus is not an offer to sell, and it is not soliciting an offer to buy, these securities in any jurisdiction where the offer or sale is not permitted.

Subject to Completion, dated June 8, 2020

PROSPECTUS

31,250,000 Shares

Class A Common Stock

This is the initial public offering of shares of Class A common stock of The AZEK Company Inc. We are offering 31,250,000 shares of Class A common stock.

Prior to this offering, there has been no public market for our Class A common stock. We anticipate that the initial public offering price for our Class A common stock will be between $19.00 and $21.00 per share. We have been approved to list our Class A common stock on the New York Stock Exchange under the symbol “AZEK”.

After giving effect to this offering and the Corporate Conversion (as defined in this prospectus), an entity affiliated with Ares Management Corporation, or Ares, will hold 53,312,907 shares of our Class A common stock, and Ontario Teachers’ Pension Plan Board, or OTPP, will hold 20,243,944 shares of our Class A common stock. OTPP will hold all of our outstanding Class B common stock. After giving effect to this offering and the Corporate Conversion, Ares and OTPP will hold approximately 37.6% and 37.6%, respectively, of our aggregate common stock. Accordingly, we expect to be a “controlled company” as defined in the corporate governance rules of the New York Stock Exchange and will be exempt from certain corporate governance requirements of the rules. We are an “emerging growth company” as that term is used in the Jumpstart Our Business Startups Act of 2012 and, as such, have elected to comply with certain reduced public company reporting requirements.

Investing in our Class A common stock involves risks. See “Risk Factors” beginning on page 28.

We have granted the underwriters a30-day option to purchase up to 4,687,500 additional shares at the initial public offering price, less the underwriting discount.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The underwriters expect to deliver the shares on or about                     , 2020.

Prospectus dated                     , 2020

TABLE OF CONTENTS

Prospectus

Neither we nor the underwriters have authorized anyone to provide any information or to make any representations other than those contained in this prospectus or in any free writing prospectus prepared by or on behalf of us or to which we have referred you. We and the underwriters take no responsibility for, and can provide no assurance as to the reliability of, any other information that others may give you. We are offering to sell, and seeking offers to buy, shares of Class A common stock only under circumstances and in jurisdictions where it is lawful to do so. The information contained in this prospectus is accurate only as of the date of this prospectus, regardless of the time of delivery of this prospectus or of any sale of Class A common stock.

You should rely only on the information contained in this prospectus. No dealer, salesperson or other person is authorized to give information that is not contained in this prospectus. This prospectus is not an offer to sell nor is it seeking an offer to buy these securities in any jurisdiction where the offer or sale is not permitted.

For investors outside the United States: Neither we nor the underwriters have done anything that would permit this offering or the possession or distribution of this prospectus in any jurisdiction where action for those purposes is required, other than in the United States. Persons outside the United States who come into possession of this prospectus must inform themselves about, and observe any restrictions relating to, this offering of Class A common stock and the distribution of this prospectus outside the United States.

Until                      (25 days after the date of this prospectus), all dealers effecting transactions in these securities, whether or not participating in this offering, may be required to deliver a prospectus. This is in addition to a dealer’s obligation to deliver a prospectus when acting as an underwriter and with respect to an unsold allotment or subscription.

-1-

-2-

-3-

-4-

-5-

-6-

-7-

-8-

-9-

-10-

-11-

-12-

-13-

-14-

-15-

-16-

-17-

-18-

-19-

-20-

-21-

-22-

-23-

-24-

-25-

-26-

-27-

RISK FACTORS

Investing in our Class A common stock involves a high degree of risk. You should carefully consider the following risks and uncertainties, together with all of the other information contained in this prospectus, including our Consolidated Financial Statements and related notes included elsewhere in this prospectus, before making an investment decision. In addition to the risks relating to the COVID-19 pandemic that are specifically described in these Risk Factors, the effects of the COVID-19 pandemic may also have the effect of significantly heightening many of the other risks associated with our business and an investment in our Class A common stock, including the other risks described in this prospectus. The occurrence of any of the following risks, or additional risks not presently known to us or that we currently believe to be immaterial, could materially and adversely affect our business, financial condition, results of operations and prospects. In such case, the trading price of our Class A common stock could decline, and you may lose all or part of your investment.

Risks Relating to Our Business and Industry

Our business, financial condition and results of operations are being, and are expected to continue to be, adversely affected by the current COVID-19 public health pandemic.

Any outbreaks of contagious diseases, public health epidemics or pandemics and other adverse public health developments could have a material adverse effect on our business, financial condition and results of operations. The COVID-19 pandemic, and the reactions of governmental and other authorities to contain, mitigate or combat the pandemic, which have severely restricted the level of economic activity around the world, have impacted, and are expected to continue to impact, our operations, and the nature, extent and duration of the impact of COVID-19 or any future disease or adverse health condition is highly uncertain and beyond our control. In response to the COVID-19 pandemic, the governments of many countries, states, cities and other geographic regions have taken preventative or protective actions, such as imposing restrictions on travel and business operations.

Although we have implemented measures to mitigate the impact of the COVID-19 pandemic on our business, financial condition and results of operations, including reducing our production and expenses, these measures may not fully mitigate the impact of the COVID-19 pandemic on our business, financial condition and results of operations. We cannot predict the degree to, or the period over, which we will be affected by the COVID-19 pandemic and resulting governmental and other measures.

We expect that the economic effects of the COVID-19 pandemic will likely continue to adversely affect demand for our products over the balance of fiscal 2020. To address the anticipated reduction in demand for our products, we are engaging directly with our distributors to share information on market demand and ensure supply and inventory levels are appropriate. We are also reducing production across our manufacturing sites to align our output with potential reductions in demand during the balance of the year. We anticipate that distributors and dealers may choose to delay the purchase of our products, and homeowners and our industrial and commercial customers may choose to delay new construction or repair and remodeling activity, in response to the COVID-19 pandemic and the measures to contain its spread.

In addition, our supply chain is largely concentrated in the United States, and although it has not been significantly affected by the COVID-19 pandemic to date, we may experience disruptions or delays in our supply chain in connection with the pandemic in the future, which may result in the need to seek alternate suppliers. Alternate suppliers may be more expensive, may not be available or may encounter delays in shipments to us, which would affect our business, financial condition and results of operations. We cannot estimate the extent and duration of the disruption to our supply chain, or the significance of the related financial impact. Should any such disruption continue for an extended period of time, the impact could have a material adverse effect on our business, financial condition and results of operations.

-28-

On March 16, 2020, we borrowed $89.0 million under the Revolving Credit Agreement to enhance our financial flexibility in light of uncertainties resulting from the COVID-19 pandemic in addition to our other borrowings under the Revolving Credit Agreement of $40.0 million in the aggregate during the three months ended March 31, 2020. In the longer term, our liquidity will depend on many factors, including our results of operations, our future growth, the timing and extent of our expenditures to develop new products and improve our manufacturing capabilities, the expansion of our sales and marketing activities and the extent to which we make acquisitions. Changes in our operating plans, material changes in anticipated sales, increased expenses, acquisitions or other events may cause us to seek additional equity and/or debt financing in future periods. We cannot assure you if our access to capital would continue to satisfy our needs under the impacts of the COVID-19 pandemic.

We expect that the COVID-19 pandemic will adversely affect many aspects of our business, including, but not limited to, the following:

-29-

Our management of the impact of COVID-19 has required, and will continue to require, significant investment of time by our management and employees as well as other resources. The focus on managing and mitigating the impacts of COVID-19 on our business will likely cause us to divert or delay the application of our resources toward new initiatives, including the development of new products, which may adversely impact our financial condition and results of operations in future periods.

The timing for us resuming operations at or near the levels of operations experienced before the COVID-19 pandemic depends on numerous factors beyond our control, including, among other things: (1) the duration of, and any revisions in, governmental quarantine, shelter-in-place or similar social distancing orders or guidelines; (2) the occurrence and magnitude of future outbreaks; (3) the availability of vaccines or other medical remedies and preventive measures; and (4) broader economic conditions, including unemployment levels and the reaction of consumers to potentially longer-term economic uncertainty, which may adversely impact our financial condition and results of operations in future periods.

Additionally, although we are reviewing any available benefits under the federal and state relief and stimulus legislation and programs, including, among other things, those under the Coronavirus Aid, Relief and Economic Security Act, or the CARES Act, at this time, we do not know whether we will be able to access any such benefits in a manner that is advantageous to us or at all.

Demand for our products is significantly influenced by general economic conditions and trends in consumer spending on outdoor living and home exteriors, and adverse trends in, among other things, the health of the economy, repair and remodel and new construction activity, industrial production, consumer confidence and discretionary spending and institutional funding constraints could have a material adverse effect on our business.

Demand for our products is significantly influenced by a number of economic factors affecting our customers, including distributors, dealers, contractors, architects, builders, homeowners and institutional and commercial consumers. Demand for our products depends on the level of residential and commercial improvement and renovation and new construction activity, and, in particular, the amount of spending on outdoor living spaces and home exteriors. Home and commercial renovation and improvement and new construction activity are affected by, among other things, interest rates, consumer confidence and spending habits, demographic trends, housing affordability levels, unemployment rates, institutional funding constraints, industrial production levels, tariffs and general economic conditions.

For example, in our Residential segment, sales of our products depend primarily on the level of repair and remodel activity and, to a lesser extent, new construction activity. Accordingly, increases in interest rates or the reduced availability of financing can reduce the level of home improvement and new construction activity and the demand for our products. In addition, the residential repair and remodel market depends in part on home equity financing, and accordingly, the level of equity in homes will affect consumers’ ability to obtain a home equity line of credit and engage in renovations that would result in purchases of our products. Accordingly, a weakness in home prices may result in a decreased demand for our residential products.

Many of our residential products are impacted by consumer demand for, and spending on, outdoor living spaces and home exteriors. For example, sales of our deck and rail products depend on lifestyle and architectural trends and the extent to which consumers prioritize spending to enhance outdoor living spaces for their homes. While we believe consumer preferences have increased spending on outdoor living and home exteriors in recent years, the level of spending could decrease in the future. Decreased spending on outdoor living spaces and home exteriors generally or as a percentage of home improvement activity may decrease demand for our deck, railing and trim products.

Demand for our products in our Commercial segment is affected by the level of commercial and governmental construction and renovation activity. The levels of commercial and governmental construction and

-30-

renovation activity are affected by the levels of interest rates, availability of financing for commercial and industrial projects, the general business environment and the availability of governmental funding. Sales of products by our Commercial segment include sales for use in institutions, such as universities and schools, and in federal, state and local government buildings, which depend on federal, state and local funding for construction and renovation projects. Sales to institutions that depend on public funding are affected by factors that may impose constraints on funding availability for construction and renovation projects, including increased operational costs, budget cuts by federal, state and local governments, including as a result of lower than anticipated tax revenues, increased limitations on federal spending or government shutdowns. Sales to commercial establishments depend on, among other things, general levels of industrial production and business growth and the performance of the various markets in which our commercial end customers operate.

Adverse trends in any of the foregoing factors could reduce our sales and have a material adverse effect on our business, financial condition and results of operations. Such factors could also alter the balance of our Residential and Commercial sales or the balance of our product sales within either such segment. In light of differing margins, changes in the relative amount and type of residential and commercial industrial activity or the mix of products sold may have an impact on our business and cause our revenues and profitability to fluctuate from period to period.

We operate in a competitive business environment. If we are unable to compete effectively our sales would suffer and our business, financial condition and operating results would be adversely affected.

We operate in a competitive business environment, and we compete with multiple companies with respect to each of our products. While we have longstanding business relationships with many of our distributors, dealers and contractors, we generally do not havelong-term contracts with these customers. Accordingly, any failure to compete effectively, including as a result of the various factors described below, could cause our customers to cease purchasing our products or rapidly decrease our sales.

Our residential products compete primarily with wood products that comprise the majority of decking, railing, trim and related market sales. We also compete with metal products and with engineered products sold by other companies. In our Commercial segment, we compete in several highly fragmented markets. Our Vycom products compete with products sold into narrow market segments with a wide range of end uses through specialized distribution networks that vary depending on the particular end use. Products made by Scranton Products compete with bathroom partitions, lockers and storage solutions sold at a wide range of prices and manufactured using a variety of materials.

Our business model relies on the continued conversion in demand from traditional wood products to our engineered products, and our business could suffer if this conversion does not continue in the future. A number of suppliers of wood and wood composite deck, trim and rail products have established relationships with contractors, builders and large home improvement retailers, and, to compete successfully, we must expand and strengthen our relationships with those parties. We must also compete successfully with products from other manufacturers that offer alternatives to wood and wood composite products, including by developing competitive new products and by responding successfully to new products introduced, and pricing and other competitive actions taken, by competitors.

Some of our competitors have financial, production, marketing and other resources that are significantly greater than ours. Consolidation by industry participants could further increase their resources and result in competitors with expanded market share, larger customer bases, greater diversified product offerings and greater technological and marketing expertise, which may allow them to compete more effectively against us. Moreover, our competitors may develop products that are superior to our products (on aprice-to-value basis or otherwise) or may adapt more quickly to new technologies or evolving customer requirements. Technological advances by our competitors may lead to new manufacturing techniques and make it more difficult for us to compete.

-31-

Our quarterly operating results may fluctuate as a result of seasonality, changes in weather conditions and changes in product mix.

Our quarterly operating results during the fiscal year ending September 30, 2020 and in future fiscal years may fluctuate or otherwise be significantly affected as a result of the COVID-19 pandemic. The effect of the pandemic may exceed the quarterly changes in our operating results that we have typically experienced from seasonality, weather conditions and product mix.

We have typically experienced moderately higher levels of sales of our residential products in the second fiscal quarter of the year as a result of our “early buy” sales and extended payment terms typically available during the second fiscal quarter of the year. As a result of these extended payment terms, our accounts receivable have typically reached seasonal peaks at the end of the second fiscal quarter of the year, and our net cash provided by operating activities has typically been lower in the second fiscal quarter relative to other quarters. Our sales are also generally impacted by the number of days in a quarter or a year that contractors and other professionals are able to install our products. We have generally experienced lower levels of sales of residential products during the first fiscal quarter due to adverse weather conditions in certain markets, which typically reduces the construction and renovation activity during the winter season. Although our products can be installedyear-round, unusually adverse weather conditions can negatively impact the timing of the sales of certain of our products, causing reduced sales and negatively impacting profitability when such conditions exist. Our residential products are generally purchased shortly before installation and used in outdoor environments. As a result, there is a correlation between the amount of products we sell and weather conditions during the time they are to be installed. Adverse weather conditions may interfere with ordinary construction, delay projects or lead to cessation of construction involving our products. Prolonged adverse weather conditions could significantly reduce our sales in one or more periods. These conditions may shift sales to subsequent reporting periods or decrease overall sales, given the limited outdoor construction season in many locations. In addition, we have experienced higher levels of sales of our engineered bathroom partition products and our locker products during the second half of our fiscal year, which includes the summer months during which schools are typically closed and therefore more likely to be undergoing remodel activities. These factors can cause our operating results to fluctuate on a quarterly basis.

Our operating results may also fluctuate due to changes in the mix of products sold. We sell products at different prices, composed of different materials and involving varying levels of manufacturing complexity. Changes in the mix of products sold from period to period may affect our average selling price, cost of sales and gross margins.

If we fail to develop new and improved products successfully, or fail to effectively manage the introduction of new products, our business will suffer.

Our continued success depends on our ability to predict the products that will be demanded by our customers and consumers, such as homeowners or commercial or industrial purchasers, and to continue to innovate and introduce improved products in our existing product lines and products in new product categories. We may not be successful in anticipating these needs or preferences or in developing new and improved products. If we do not respond effectively to changing market trends, demands and preferences and to actions by competitors by introducing competitive new products, our business, financial condition and results of operations would suffer.

Even if we do introduce new products in the market, consumers may not choose our new products over existing products. In addition, competitors could introduce new or improved products that would replace or reduce demand for our products or develop proprietary changes in manufacturing technologies that may render our products obsolete or too expensive to compete effectively. In addition, when we introduce new products, we must effectively anticipate and manage the effect of new product introductions on sales of our existing products. If new products displace sales of existing products more broadly or rapidly than anticipated, we may have excess inventory of existing products and be required to reduce prices on existing products, which could adversely affect our results of operations. As we continue to introduce new products at varying price points to broaden our

-32-

product offerings to compete with products made with wood or other traditional materials across a wide range of prices, our overall gross margins may vary from period to period as a result of changes in product mix. Moreover, we may introduce new products with initially lower gross margins with the expectation that the gross margins associated with those products may improve over time as we improve our manufacturing efficiency for those products, and our results of operations would be adversely affected if we are unable to realize the anticipated improvements.

Although we are reducing our expansion and capital expenditures in response to the COVID-19 pandemic, in the past we have devoted, and in the future we expect to continue to devote, significant resources to developing new products. However, we cannot be sure that we will successfully complete the development and testing of new products and be able to release the products when anticipated or at all. From time to time, we may make investments in the development of products we ultimately determine not to release resulting in write-downs of inventory and related assets.

Our business would suffer if we do not effectively manage changes in our manufacturing processes resulting from growth of our business, cost savings and integration initiatives and the introduction of new technologies and products.

We continually review our manufacturing operations in an effort to achieve increased manufacturing efficiencies, integrate new technologies and to address changes in our product lines and in market demand. Periodic manufacturing integrations, realignments and cost savings programs and other changes have adversely affected, and could in the future adversely affect, our operating efficiency and results of operations during the periods in which such programs are being implemented. Such programs may include the addition of manufacturing lines and the consolidation, integration and upgrading of facilities, functions, systems and procedures, including the introduction of new manufacturing technologies and product innovations. These programs involve substantial planning, often require capital investments, and may result in charges for fixed asset impairments or obsolescence and substantial severance costs. Our ability to achieve cost savings or other benefits within the time frames we anticipate is subject to many estimates and assumptions, a number of which are subject to significant economic, competitive and other uncertainties. For example, we have made substantial investments to expand our recycling capabilities and to increase the use of reclaimed materials in our manufacturing processes. While we anticipate that enhancing these capabilities will ultimately decrease our costs, the introduction of these capabilities has required significant initial investment, and we cannot be certain we will realize the benefits of this initiative when anticipated or at all. If these investments and other changes are not effectively integrated into our manufacturing processes, we may suffer from production delays, lower efficiency and manufacturing yields, increased costs and reduced net sales.

We must also effectively address changes to our manufacturing operations resulting from growth of our business generally and introduction of new products. As we increase our manufacturing capacity to meet market demand or begin to manufacture new products at scale, we may face unanticipated manufacturing challenges as production volumes increase, new processes are implemented and new supplies of raw materials used in these products are secured. New products may initially be more costly and less efficient to produce than our existing products. In addition, we could experience delays in production as we increase our manufacturing capacity or begin to manufacture new products that may result in the products ordered by our customers being on back-order as initial production issues are addressed. As a result, increases in manufacturing capacity or the introduction of new products may initially be associated with lower efficiency and manufacturing yields and increased costs, including shipping costs to fill back-orders.

If we experience production delays or inefficiencies, a deterioration in the quality of our products or other complications in managing changes to our manufacturing processes, including those that are designed to increase capacity, enhance efficiencies and reduce costs or that relate to new products or technologies, we may not achieve the benefits that we anticipate from these actions when expected, or at all, and our operations could experience disruptions, our manufacturing efficiency could suffer and our business, financial condition and results of operations could be materially and adversely affected.

-33-

Our sales and results of operations may suffer if we do not maintain our relationships with, forecast the demand of and make timely deliveries to our key distributors or other customers.

Our operations depend upon our ability to maintain our strong relationships with our network of distributors and dealers. Our top ten distributors collectively accounted for a majority of our net sales for the year ended September 30, 2019. Our largest distributor, Parksite Inc., accounted for approximately 20% of our net sales for the year ended September 30, 2019. While we have long-standing business relationships with many of our key distributors and our distribution contracts generally provide for exclusive relationships with respect to certain products within certain geographies, these contracts typically permit the distributor to terminate for convenience on several months’ notice. The loss of, or a significant adverse change in, our relationships with one or more of our significant distributors could materially reduce our net sales.

Distributors and dealers that sell our products, are sensitive to meeting the demands of their end customers on a timely basis. Dealers that sell our products typically place orders with our distributors that need to be filled in a short time frame and these dealers typically do not have an exclusive relationship with us. Purchases by our distributors and dealers are affected by their individual decisions on the levels of inventory they carry, their views on product demand, their financial condition and the manner in which they choose to manage inventory risk. In addition, purchases by distributors and dealers are affected by a variety of other factors, including product pricing, increases in the number of competitive producers and the production capacity of other producers, new product introductions, changes in levels of home renovation and new construction activity, and weather-related fluctuations in demand. As a result, demand for our products can be difficult to predict. If we do not forecast and plan production effectively to manufacture sufficient products to meet demand or if we experience delays in our ability to manufacture products, dealers may seek alternative products, including those of our competitors. Failure to meet demand requirements on a timely basis, may cause distributors or dealers to build up inventory as a precautionary measure, rapidly shift their product mix away from our products, harm our long-term relationships with distributors and dealers, harm our brand and reduce, or increase the variability of, our net sales.

We must continue to provide product offerings at price points that meet the needs of distributors and dealers and that they perceive to be competitive with the products on the market. If our key distributors or dealers are unwilling to continue to sell our products at existing or higher levels, or if they desire to sell competing products alongside our products, our ability to maintain or increase our sales could suffer. In addition, mergers or acquisitions involving our distributors or dealers and one of our competitors, or a distributor or dealer with a relationship with one of our competitors, could decrease or eliminate purchases of our product by that distributor or dealer. If a key distributor or dealer were to terminate its relationship with us or reduce purchases of our products, we may not be able to replace that relationship with a relationship with a new distributor or dealer in a timely manner or at all. In addition, any such new relationship may take time to develop and may not be as favorable to us as the relationship it is replacing. The loss of, or a reduction in orders from, any significant distributor or dealer, may have a material adverse effect on our business, financial condition or results of operations.

Shortages in supply, price increases or deviations in the quality of the raw materials used to manufacture our products could adversely affect our sales and operating results.

The primary raw materials used in our products are various petrochemical resins, including polyethylene, polypropylene and PVC resins, reclaimed polyethylene and PVC material, waste wood fiber and aluminum. We also utilize other additives including modifiers, titanium dioxide, or TiO2, and pigments. Our contracts with key suppliers are typically short term in nature, with terms generally ranging from one to three years. While we do not rely on any single supplier for the majority of our raw materials, we do obtain certain raw materials from single or a limited number of suppliers. In particular, we rely on a single supplier for certain critical capped compounds used in our deck and railing products. We do not currently have arrangements in place for a redundant or second-source supply for those compounds. If one or more suppliers were unable to satisfy our requirements for particular raw materials, we believe alternative sources of supply would be available. However,

-34-

we could experience a disruption to our operations as alternative suppliers are identified and qualified and new supply arrangements are entered into, and we cannot be sure we will be able to identify alternative sources of supply rapidly, without incurring significant costs or at all.

In the event of anindustry-wide general shortage of our raw materials, a shortage affecting or discontinuation in providing any such raw materials by one or more of our suppliers or a supplier’s declaration offorce majeure, we may not be able to arrange for alternative sources of such materials on a timely basis or on equally favorable terms. We have also recently significantly increased the use of reclaimed polyethylene and PVC material in our products. As we increase our use of such materials and introduce new materials into our manufacturing processes, we may be unable to obtain adequate quantities of such new raw materials in a timely manner. Any such shortage may materially adversely affect our production process as well as our competitive position as compared to companies that are able to source their raw materials more reliably or at lower cost.

In addition, significant increases in the cost of the raw materials used to manufacture our products could adversely affect our operating results. The cost of some of the raw materials we use in the manufacture of our products is subject to significant price volatility. For example, the cost of petrochemical resins used in our manufacturing processes has historically varied significantly and has been affected by changes in supply and demand and in the price of crude oil. We have not entered into hedges of our raw material costs, and our supply contracts with our major vendors do not contain obligations to sell raw materials to us at a fixed price. Accordingly, we are exposed to the risk of increases in the market prices of raw materials used in the manufacture of our products. Our results of operations have been affected in the past by changes in the cost of resins, and we expect that our results of operations in the future will continue to be affected by changes in resin costs. In the event of an increase in the cost of resins or other raw materials, we may not be able to recover the increases through corresponding increases in the prices of our products. Even if we are able to increase prices over time, we may not be able to increase prices as rapidly as the increase in our costs. If we are unable to increase our prices or experience a delay in our ability to increase our prices or to recover such increases in our costs, our gross profit will suffer. In addition, increases in the price of our products to compensate for increased costs of raw materials may reduce demand for our products and adversely affect our competitive position as compared to products made of other materials, such as wood and metal, that are not affected by changes in the price of resins and some of the other raw materials that we use in the manufacture of our products.

We are dependent upon the ability of our suppliers to consistently provide raw materials that meet our specifications, quality standards and other applicable criteria. Our suppliers’ failure to provide raw materials that meet such criteria could adversely affect production schedules and our product quality, which in turn could materially adversely affect our business, financial condition and results of operations.

An interruption of our production capability at one or more of our manufacturing facilities from pandemics, accident, calamity or other causes, or events affecting the global economy, could adversely affect our business.

We manufacture our products at a limited number of manufacturing facilities, and we generally do not have redundant production capabilities that would enable us to shift production of a particular product rapidly to another facility in the event of a loss of one of or a portion of one of our manufacturing facilities. A catastrophic loss of the use of one or more of our manufacturing facilities due to pandemics, including the COVID-19 pandemic, accident, fire, explosion, labor issues, tornado, other weather conditions, natural disasters, condemnation, cancellation ornon-renewals of leases, terrorist attacks or other acts of violence or war or otherwise could have a material adverse effect on our production capabilities. In addition, unexpected failures, including as a result of power outages or similar disruptions outside of our control, of our equipment and machinery could result in production delays or the loss of raw materials or products in the equipment or machinery at the time of such failures. Any of these events could result in substantial revenue loss and repair costs. An interruption in our production capabilities could also require us to make substantial capital expenditures to replace damaged or destroyed facilities or equipment. There are a limited number of manufacturers that make some of the equipment we use in our manufacturing facilities, and we could experience significant delay in

-35-

replacing manufacturing equipment necessary to resume production. An interruption in our production capability, particularly if it is of significant duration, could result in a permanent loss of customers who decide to seek alternate products.

Our business operations could be adversely affected by the loss of the services from members of our senior management team and other key employees.

Our success depends in part on the continued contributions of our senior management and other key employees. Our senior operating management members have extensive sales and marketing, engineering, product development, manufacturing and finance backgrounds. The loss of any member of our senior management team or other key employees in the future could significantly impede our ability to successfully implement our business strategy, financial plans, product development goals, marketing initiatives and other objectives. Should we lose the services of any member of our senior management team or key personnel, replacing such personnel could involve a prolonged search and divert management time and attention and we may not be able to locate and hire a qualified replacement. We do not carry key man insurance to mitigate the financial effect of losing the services of any member of our management team.

Acquisitions or joint ventures we may pursue in the future may be unsuccessful.

We may consider the acquisition of other manufacturers or product lines of other businesses that either complement or expand our existing business, or may enter into joint ventures. We cannot assure you that we will be able to consummate any such acquisitions or joint ventures or that any future acquisitions or joint ventures will be able to be consummated at acceptable prices and on acceptable terms. Any future acquisitions or joint ventures we pursue may involve a number of risks, including some or all of the following:

-36-

Any of these risks could have a material adverse effect on our business, financial condition or results of operations.

In addition, acquisitions or joint ventures could result in significant increases in our outstanding indebtedness and debt service requirements or could involve the issuance of preferred stock or common stock that would be dilutive to existing stockholders. Incurring additional debt to fund an acquisition may result in higher debt service and a requirement to comply with additional financial and other covenants, including potential restrictions on future acquisitions and distributions. Funding an acquisition with our existing cash would reduce our liquidity. The terms of our existing and future debt agreements may limit the size and/or number of acquisitions we can pursue or our ability to enter into a joint venture.

Our business could be adversely affected if we fail to maintain product quality and product performance at an acceptable cost or if we incur significant losses, increased costs or harm to our reputation or brand as a result of product liability claims or product recalls.

In order to maintain and increase our net sales and sustain profitable operations we must produce high-quality products at acceptable manufacturing costs and yields. If we are unable to maintain the quality and performance of our products at acceptable costs, our brand, the market acceptance of our products and our results of operations would suffer. As we regularly modify our product lines and introduce changes to our manufacturing processes or incorporate new raw materials, we may encounter unanticipated issues with product quality or production delays. For example, we have recently introduced products that incorporate larger proportions of reclaimed raw materials, primarily reclaimed polyethylene and PVC. While we engage in product testing in an effort to identify and address any product quality issues before we introduce products to market, unanticipated product quality or performance issues may be identified after a product has been introduced and sold.

In addition, we face the risk of exposure to product liability or other claims, including class action lawsuits, in the event our products are, or are alleged to be, defective or have resulted in harm to persons or to property. We may in the future incur significant liabilities if product liability lawsuits against us are successful. We may also have to recall and/or replace defective products, which would also result in adverse publicity and loss of sales, and would result in us incurring costs connected with the recall, which could be material. Any losses not covered by insurance could have a material adverse effect on our business, financial condition and results of operations. Real or perceived quality issues, including those arising in connection with product liability lawsuits, warranty claims or recalls, could also result in adverse publicity, which could harm our brand and reputation and cause our sales to decline rapidly. In addition, any such issues may be seized on by competitors in efforts to increase their market share.

We provide product warranties and, if our product warranty obligations were significantly in excess of our reserves, our business, financial condition and results of operations could be materially and adversely affected.

We provide various warranties on our products, ranging from five years to lifetime warranties depending on the product and subject to various limitations. Management estimates warranty reserves, based in part upon historical warranty costs, as a proportion of sales by product line. Management also considers various relevant factors, including our stated warranty policies and procedures, as part of the evaluation of our warranty liability. Because warranty issues may surface later in the life cycle of a product, management continues to review these estimates on a regular basis and considers adjustments to these estimates based on actual experience compared to historical estimates. Estimating the required warranty reserves requires a high level of judgment, especially as many of our products are at a relatively early stage in their product life cycles, and we cannot be sure that our warranty reserves will be adequate for all warranty claims that arise. We have recently increased our use of reclaimed materials in the manufacturing of our products. While we performed extensive testing in connection with the utilization of such materials, the use of reclaimed materials represents a recent and significant change in our business and the use of such materials may result in unanticipated product quality or performance issues and

-37-

an increase in warranty claims for certain of our products. We have also recently introduced a new warranty that provides coverage for labor costs incurred in the replacement of products under warranty under specified circumstances. Although we have significant experience regarding warranty claims on our products generally, we do not have historical experience relating to warranty claims under the terms of this new warranty coverage. Warranty obligations in excess of our reserves could have a material adverse effect on our business, financial condition and results of operations.

We depend on third parties for transportation services, and the lack of availability of and/or increases in the cost of transportation could have a material adverse effect on our business and results of operations.

Our business depends on the transportation of both finished goods to our distributors and other customers and the transportation of raw materials to us primarily through the use of flatbed trucks and rail transportation. We rely on third parties for transportation of these items. The availability of these transportation services is subject to various risks, including those associated with supply shortages, change in fuel prices, work stoppages, operating hazards and interstate transportation regulations. In particular, a significant portion of our finished goods are transported by flatbed trucks, which are occasionally in high demand (especially at the end of calendar quarters) and/or subject to price fluctuations based on market conditions and the price of fuel.

If the required supply of transportation services is unavailable when needed, we may be unable to sell our products when they are requested by our customers. In that event, we may be required to reduce the price of the affected products, seek alternative and, potentially more costly, transportation services or be unable to sell the affected products. Similarly, if any of these transportation providers were unavailable to deliver raw materials to us in a timely manner, we may be unable to manufacture our products in response to customer demand. In addition, a significant increase in transportation rates or fuel surcharges could adversely affect our profitability. Any of these events could have a material adverse effect on our business and results of operations.

Increases in labor costs, potential labor disputes and work stoppages or an inability to hire skilled manufacturing, sales and other personnel could adversely affect our business.

Our financial performance is affected by the availability of qualified personnel and the cost of labor. As of April 30, 2020, we had approximately 1,540 employees. An increase in labor costs, work stoppages or disruptions at our facilities or those of our suppliers or transportation service providers, or other labor disruptions, could decrease our sales and increase our expenses. In addition, although our employees are not represented by a union, our labor force may become subject to labor union organizing efforts, which could cause us to incur additional labor costs and increase the related risks that we now face.

The competition for skilled manufacturing, sales and other personnel is intense in the regions in which our manufacturing facilities are located, including in Wilmington, Ohio and Scranton, Pennsylvania. A significant increase in the salaries and wages paid by competing employers could result in a reduction of our labor force, increases in the salaries and wages that we must pay or both. If we are unable to hire skilled manufacturing, sales and other personnel, our ability to execute our business plan, and our results of operations, would suffer.

If we are unable to collect accounts receivable from one or more of our significant distributors, dealers or other customers, our financial condition and operating results could suffer.

We extend credit to our distributors and, to a lesser extent, dealers and other customers, based on an evaluation of their financial condition, and we generally do not require collateral to secure these extensions of credit. The financial health of many of our customers is affected by changes in the economy and the cyclical nature of the building industry. The effects of the COVID-19 pandemic and the related economic downturn or protracted or severe economic declines and cyclical downturns from other causes in the building industry may cause our customers to be unable to satisfy their payment obligations, including their debts to us. While we maintain allowances for doubtful accounts, these allowances may not be adequate to provide for actual losses, and our financial condition and results of operation could be materially and adversely affected if our losses from doubtful accounts significantly exceed our estimates.

-38-

We may incur goodwill and other intangible or long-lived asset impairment charges that adversely affect our operating results.

We review our goodwill and other intangibles not subject to amortization for impairment annually, or when events or circumstances indicate that it is more likely than not that the fair value of a reporting unit could be lower than its carrying value. Changes in economic or operating conditions impacting our estimates and assumptions could result in the impairment of our goodwill orlong-lived assets. Although no impairments were recorded for the six months ended March 31, 2020 or the years ended September 30, 2019 or 2018, an impairment of $32.2 million was recorded as of September 30, 2017 with respect to one of our reporting units as a result of lower than anticipated sales revenue and operating margins due to manufacturing inefficiencies and service issues. In the event that we determine our goodwill orlong-lived assets are impaired, we may be required to record a significant charge to earnings in our financial statements that could have a material adverse effect on our results of operations.

We have identified material weaknesses in our internal control over financial reporting. If our remediation of these material weaknesses is not effective, or if we identify additional material weaknesses in the future or otherwise fail to maintain an effective system of internal controls in the future, we may not be able to accurately or timely report our financial condition or results of operations, investors may lose confidence in the accuracy and completeness of our financial reports and the trading price of our Class A common stock may decline.

As of September 30, 2019, we determined that we have three material weaknesses in our internal control over financial reporting. The first material weakness relates to the maintenance of an effective control environment as we lacked a sufficient complement of resources. This material weakness contributed to an additional material weakness relating to the design and maintenance of formal accounting policies, procedures and controls. The third relates to the design and maintenance of effective controls over certain information technology general controls. A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of a company’s annual or interim financial statements will not be prevented or detected on a timely basis.

The first material weakness relates to the fact that we did not design or maintain an effective control environment commensurate with our financial reporting requirements. Specifically, we lacked a sufficient complement of resources with an appropriate level of accounting knowledge, training and experience to appropriately analyze, record and disclose accounting matters timely and accurately. This material weakness contributed to the following additional three material weaknesses.

The second material weakness relates to the fact that we did not design and maintain adequate formal accounting policies, procedures and controls, or maintain documentary evidence of existing control activities. Specifically, we did not design and maintain adequate formal accounting policies, procedures and controls to achieve complete, accurate and timely financial accounting, reporting and disclosures, including adequate controls over the preparation and review of account reconciliations and journal entries. Additionally, we did not maintain adequate documentary evidence of existing control activities, and we did not design and maintain controls over the appropriate classification and presentation of accounts and disclosures in the financial statements.

We also had a previous material weakness, which was remediated during fiscal 2019, that related to the fact that we did not design and maintain formal accounting policies, procedures and controls to analyze, account for and disclosenon-routine or complex transactions.

These two remaining material weaknesses and the previous material weakness resulted in revision of our consolidated financial statements as of September 30, 2018 and for the year then ended, and in immaterial audit adjustments to our consolidated financial statements as of September 30, 2019, 2018 and 2017 and for the years then ended.

-39-

As of September 30, 2019, we also have a third material weakness as a result of the material weakness in our control environment in that we did not design and maintain effective controls over certain information technology, or IT, general controls for information systems and applications that are relevant to the preparation of the financial statements. Specifically, we did not design and maintain:

These IT control deficiencies did not result in a misstatement to our financial statements. However, the deficiencies, when aggregated, could impact maintaining effective segregation of duties, as well as the effectiveness ofIT-dependent controls (such as automated controls that address the risk of material misstatements to one or more assertions, and IT controls and underlying data that support the effectiveness of IT system-generated data and reports).

Each of the remaining material weaknesses described above involve control deficiencies that could result in a misstatement of one or more account balances or disclosures that would result in a material misstatement to the annual or interim consolidated financial statements that would not be prevented or detected, and, accordingly, we determined that these control deficiencies constitute material weaknesses.

We are in the process of taking steps intended to address the underlying causes of the material weaknesses and to remediate the three remaining material weaknesses. Our efforts to date have included: (i) hiring additional qualified finance and accounting personnel, including the hiring of a new Chief Financial Officer and Chief Accounting Officer; (ii) the implementation of formal policies, procedures and controls, training on standards of documentary evidence, as well as implementation of controls designed to ensure the reliability of critical spreadsheets and system generated reports; and (iii) designing and engaging in the implementation of an IT general controls framework that addresses risks associated with user access and security, application change management and IT operations, focused training for control owners to help sustain effective control operations and comprehensive remediation efforts relating to segregation of duties to strengthen user access controls and security.

While we believe these efforts will improve our internal controls and address the underlying causes of the three remaining material weaknesses, such material weaknesses will not be fully remediated until our remediation plan has been fully implemented and we have concluded that our controls are operating effectively for a sufficient period of time. For more information on our efforts to remediate these material weaknesses, see “Management’s Discussion and Analysis of Financial Condition and Operations—Internal Control over Financial Reporting.”

We cannot be certain that the steps we are taking will be sufficient to remediate the control deficiencies that led to our material weaknesses in our internal control over financial reporting or prevent future material weaknesses or control deficiencies from occurring. In addition, we cannot be certain that we have identified all material weaknesses in our internal control over financial reporting, or that in the future we will not have additional material weaknesses in our internal control over financial reporting.

If we fail to effectively remediate the remaining material weaknesses in our internal control over financial reporting, or if we identify additional material weaknesses in the future or otherwise fail to maintain an effective system of internal controls in the future, we may be unable to accurately or timely report our financial condition

-40-

or results of operations. We also could become subject to sanctions or investigations by the securities exchange on which our Class A common stock is listed, the SEC or other regulatory authorities. In addition, if we are unable to assert that our internal control over financial reporting is effective, or if our independent registered public accounting firm is unable to express an opinion as to the effectiveness of our internal control over financial reporting, when required, investors may lose confidence in the accuracy and completeness of our financial reports, we may face restricted access to the capital markets, and the trading price of our Class A common stock may decline.

If we fail to maintain an effective system of internal controls, our ability to produce timely and accurate financial statements or comply with applicable regulations could be impaired.

As a public company, we will be subject to the reporting requirements of the Securities Exchange Act of 1934, as amended, or the Exchange Act, theSarbanes-Oxley Act of 2002, or theSarbanes-Oxley Act, and the rules and regulations and the listing standards of the New York Stock Exchange, or the NYSE.

TheSarbanes-Oxley Act requires, among other things, that we maintain effective disclosure controls and procedures and internal control over financial reporting. We are continuing to develop and refine our disclosure controls and other procedures that are designed to ensure that information required to be disclosed by us in the reports that we will file with the SEC is recorded, processed, summarized and reported within the time periods specified in SEC rules and forms and that information required to be disclosed in reports under the Exchange Act is accumulated and communicated to our principal executive and financial officers. We are also continuing to improve our internal control over financial reporting. In order to maintain and improve the effectiveness of our disclosure controls and procedures and internal control over financial reporting, we have expended, and anticipate that we will continue to expend, significant resources, includingaccounting-related costs and significant management oversight.

In addition to the material weaknesses in our internal control over financial reporting that we have identified, we may discover additional weaknesses in our disclosure controls and internal control over financial reporting in the future. Any failure to develop or maintain effective controls or any difficulties encountered in their implementation or improvement could harm our operating results or cause us to fail to meet our reporting obligations and may result in a restatement of our financial statements for prior periods. Any failure to implement and maintain effective internal control over financial reporting also could adversely affect the results of periodic management evaluations and annual independent registered public accounting firm attestation reports regarding the effectiveness of our internal control over financial reporting that we will eventually be required to include in our periodic reports that will be filed with the SEC. Ineffective disclosure controls and procedures and internal control over financial reporting could also cause investors to lose confidence in our reported financial and other information, which could have a negative effect on the trading price of our Class A common stock. In addition, if we are unable to continue to meet these requirements, we may not be able to remain listed on the NYSE. We are not currently required to comply with the SEC rules that implement Section 404 of theSarbanes-Oxley Act and are therefore not required to make a formal assessment of the effectiveness of our internal control over financial reporting for that purpose. As a public company, we will be required to provide an annual management report on the effectiveness of our internal control over financial reporting commencing with our second annual report on Form10-K.

Our independent registered public accounting firm is not required to formally attest to the effectiveness of our internal control over financial reporting until after we are no longer an “emerging growth company” as defined in the Jumpstart Our Business Startups Act, or the JOBS Act. At such time, our independent registered public accounting firm may issue a report that is adverse in the event it is not satisfied with the level at which our internal control over financial reporting is documented, designed or operating. Any failure to maintain effective disclosure controls and internal control over financial reporting could have a material adverse effect on our business and operating results and could cause a decline in the price of our Class A common stock.

-41-

Subjective estimates and judgments used by management in the preparation of our financial statements, including estimates and judgments that may be required by new or changed accounting standards, may impact our financial condition and results of operations.

The preparation of financial statements requires management to make estimates and judgments that affect the reported amounts of assets, liabilities, revenue and expenses. Due to the inherent uncertainty in making estimates, results reported in future periods may be affected by changes in estimates reflected in our financial statements for earlier periods. Estimates and judgments are continually evaluated and are based on historical experience and other factors, including expectations of future events that are believed to be reasonable under the circumstances. From time to time, there may be changes in the financial accounting and reporting standards that govern the preparation of our financial statements. These changes can materially impact how we record and report our financial condition and results of operations. In some instances, we could be required to apply a new or revised standard retrospectively. If the estimates and judgments we use in preparing our financial statements are subsequently found to be incorrect or if we are required to restate prior financial statements, our financial condition or results of operations could be significantly affected.

The estimates and forecasts of market opportunity and market growth included in this prospectus may prove to be inaccurate, and we cannot assure you our business will grow at similar rates, or at all.

Estimates and forecasts of market size and opportunity and of market growth are subject to significant uncertainty and are based on assumptions and estimates that may not prove to be accurate. The estimates and forecasts in this prospectus of the size of the markets that we may be able to address and the growth in these markets are subject to many assumptions and may prove to be inaccurate. In particular, the market and industry estimates in this prospectus were prepared prior to the COVID-19 pandemic. We expect that the COVID-19 pandemic may materially reduce the growth of various of the markets discussed in this prospectus, and we cannot predict the extent to which these estimates will be affected. Further, we may not be able to address fully the markets that we believe we can address, and we cannot be sure that these markets will grow at historical rates or the rates we expect for the future. Even if we are able to address the markets that we believe represent our market opportunity and even if these markets experience the growth we expect, we may not grow our business at similar rates, or at all. Our growth is subject to many factors, including our success in implementing our business strategy, which is subject to many risks and uncertainties. Accordingly, the estimates and forecasts of market size and opportunity and of market growth included in this prospectus may not be indicative of our future growth.

We may be subject to significant compliance costs as well as liabilities under environmental, health and safety laws and regulations which could materially and adversely affect our business, financial condition and operations.

Our past and present operations, assets and products are subject to regulation by extensive environmental laws and regulations at the federal, state and local levels. These laws regulate, among other things, air emissions, the discharge or release of materials into the environment, the handling and disposal of wastes, remediation of contaminated sites, worker health and safety and the impact of products on human health and safety and the environment. Under some of these laws, liability for contaminated property may be imposed on current or former owners or operators of the property or on parties that generated or arranged for waste sent to the property for disposal. Liability under these laws may be joint and several and may be imposed without regard to fault or the legality of the activity giving rise to the contamination. Our facilities are located on sites that have been used for manufacturing activities for an extended period of time, which increases the possibility of contamination being present. Despite our compliance efforts, we may still face material liability, limitations on our operations or fines or penalties for violations of environmental, health and safety laws and regulations, including releases of regulated materials and contamination by us or previous occupants at our current or former properties or at offsite disposal locations we use.

-42-

We are also subject to permitting requirements under environmental, health and safety laws and regulations applicable in the jurisdictions in which we operate. Those requirements obligate us to obtain permits from one or more governmental agencies in order to conduct our operations. Such permits are typically issued by state agencies, but permits and approvals may also be required from federal or local governmental agencies. The requirements for such permits vary depending on the location where our regulated activities are conducted. As with all governmental permitting processes, there is a degree of uncertainty as to whether a permit will be granted, the time it will take for a permit to be issued and the conditions that may be imposed in connection with the granting of the permit. Any failure to obtain or delay in obtaining a permit required for our operations, or the imposition of onerous conditions in any such permits, could adversely affect our business, financial condition and operations.

Applicable environmental, health and safety laws and regulations, and any changes to them or in their enforcement, may require us to make material expenditures with respect to ongoing compliance with, or remediation under, these laws and regulations or require that we modify our products or processes in a manner that increases our costs and/or reduces our profitability. For example, additional pollution control equipment, process changes or other environmental control measures may be needed at our facilities to meet future requirements. In addition, discovery of currently unknown or unanticipated soil or groundwater contamination at our properties could result in significant liabilities and costs. Accordingly, we are unable to predict the future costs of compliance with, or liability under, environmental, health and safety laws and regulations.

Our business operations could suffer if we fail to adequately protect our intellectual property rights, and we may experience claims by third parties that we are violating their intellectual property rights.

We rely on trademark and service mark protection to protect our brands, and we have registered or applied to register many of these trademarks and service marks. In particular, we believe the AZEK and AZEK Exteriors brands, the TimberTech brand and the VERSATEX brand are significant to the success of our business. In the event that our trademarks or service marks are successfully challenged and we lose the rights to use those trademarks or service marks, or if we fail to prevent others from using them (or similar marks), we could be forced to rebrand our products, requiring us to devote resources to advertising and marketing new brands. In addition, we cannot be sure that any pending trademark or service mark applications will be granted or will not be challenged or opposed by third parties or that we will be able to enforce our trademark rights against counterfeiters.

We generally rely on a combination of unpatented proprietaryknow-how and trade secrets, and to a lesser extent, patents to preserve our position in the market. Because of the importance of our proprietaryknow-how and trade secrets, we employ various methods to protect our intellectual property, such as entering into confidentiality agreements with third parties, and controlling access to, and distribution of, our proprietary information. We may not be able to deter current and former employees, contractors and other parties from breaching confidentiality obligations and misappropriating proprietary information. It is difficult for us to monitor unauthorized uses of our products and technology. Accordingly, these protections may not be adequate to prevent competitors from copying, imitating or reverse engineering our products or from developing and marketing products that are substantially equivalent to or superior to our own.

In addition, we have applied for patent protection relating to certain existing and proposed products, processes and services or aspects thereof. We cannot be sure that any of our pending patent applications will be granted or that any patents issued as a result of our patent applications will be of sufficient scope or strength to provide us with any meaningful protection or commercial advantage.

If third parties take actions that affect our rights or the value of our intellectual property or proprietary rights, or if we are unable to protect our intellectual property from infringement or misappropriation, other companies may be able to offer competitive products at lower prices, and we may not be able to effectively compete against these companies. In addition, if any third party copies or imitates our products in a manner that

-43-

affects customer or consumer perception of the quality of our products, or of engineered products generally, our reputation and sales could suffer whether or not these violate our intellectual property rights.

In addition, we face the risk of claims that we are infringing third parties’ intellectual property rights. Any such claim, even if it is without merit, could be expensive and time-consuming to defend and could divert the time and attention of our management. An intellectual property claim against us that is successful could cause us to cease making or selling products that incorporate the disputed intellectual property, require us to redesign our products, which may not be feasible or cost effective, and require us to enter into costly royalty or licensing arrangements, any of which could have a material adverse effect on our business, financial condition and results of operations. Moreover, certain material technology andknow-how we use to manufacture our products is licensed to us rather than owned by us, and our license is subject to termination in the event of uncured material breach, among other reasons.

Any major disruption or failure of our information technology systems or our website, or our failure to successfully implement new technology effectively, could adversely affect our business and operations.

We rely on various information technology systems, owned by us and third parties, to manage our operations, maintain books and records, record transactions, provide information to management and prepare our financial statements. In addition, we have made a significant investment in our website which we believe is critical for lead generation and is the primary forum through which we interact with end consumers. A failure of our information technology systems or our website to operate as expected could disrupt our business and adversely affect our financial condition and results of operations. These systems and our website are vulnerable to damage from hardware failure; fire; power loss; Internet; data network and telecommunications failure; loss or corruption of data and impacts of terrorism; natural disasters or other disasters. We may not have sufficient redundant operations to cover a loss or failure in a timely manner. In addition, the operation of these systems and our website is dependent upon third party technologies, systems and services, and support by third party vendors, and we cannot be sure that these third party systems, services and support will continue to be available to us without interruption, particularly in light of the disruptions stemming from the COVID-19 pandemic. Any damage to our information technology systems or website could cause interruptions to our operations that materially adversely affect our ability to meet customers’ requirements, resulting in an adverse impact to our business, financial condition and results of operations. Periodically, these systems and our website need to be expanded, updated or upgraded as our business needs change. We may not be able to successfully implement changes in our information technology systems and to our website without experiencing difficulties, which could require significant financial and human resources.

We face cybersecurity risks and risks arising from new regulations governing information security and privacy and may incur increasing costs in an effort to mitigate those risks.

We utilize systems and websites that allow for the secure storage and transmission of proprietary or confidential information regarding our customers, employees and others, including personal information. We may be vulnerable to, and unable to anticipate or detect, data security breaches and data loss, including rapidly evolving and increasingly sophisticated and prevalent cybersecurity attacks. In addition, data security breaches can also occur as a result of a breach by us or our employees or by persons with whom we have commercial relationships that result in the unauthorized release of personal or confidential information. In addition to our own databases, we use third-party service providers to store, process and transmit confidential or sensitive information on our behalf. A data security breach could occur in the future either at their location or within their systems that could affect our personal or confidential information.

A data security breach may expose us to a risk of loss or misuse of this information, and could result in significant costs to us, which may include, among others, fines and penalties, costs related to remediation, potential costs and liabilities arising from governmental orthird-party investigations, proceedings or litigation, diversion of management attention and harm to our reputation. We could also experience delays or interruptions

-44-

in our ability to function in the normal course of business, including delays in the fulfillment of customer orders or disruptions in the manufacture and shipment of products. In addition, actual or anticipated attacks may cause us to incur costs, including costs to deploy additional personnel and protection technologies, train employees and engagethird-party experts and consultants. Any compromise or breach of our security could result in a violation of applicable privacy and other laws, significant legal and financial exposure, and a loss of confidence in our security measures, which could have an adverse effect on our business, financial condition and reputation.

The regulatory environment surrounding information security and privacy is increasingly demanding, with frequent imposition of new and changing requirements, which could cause us to incur substantial costs. In the United States, various laws and regulations apply to the collection, processing, disclosure and security of certain types of data, including the Electronic Communications Privacy Act, the Computer Fraud and Abuse Act, the Health Insurance Portability and Accountability Act of 1996, the Gramm Leach Bliley Act and various state laws relating to privacy and data security, including the California Consumer Privacy Act, which took effect on January 1, 2020.

Any failure or perceived failure by us to comply with laws, regulations, policies or regulatory guidance relating to privacy or data security may result in governmental investigations and enforcement actions, litigation, fines and penalties or adverse publicity, and could cause our customers and consumers to lose trust in us, which could have an adverse effect on our reputation and business.

Changes to legislative and regulatory policies related to home ownership may have a material adverse effect on our business, financial condition and results of operations.

Our markets are affected by legislative and regulatory policies that promote or do not promote home ownership, such as U.S. tax rules allowing for deductions of mortgage interest or interest on home equity loans. For example, the Tax Cuts and Jobs Act, or the Tax Act, which was enacted into law on December 22, 2017, imposes limitations on the deductibility of interest on mortgages qualifying of the home mortgage interest deduction. Beginning in 2018, taxpayers may only deduct interest on $750,000 of qualified residence loans, including home equity loans that are used to substantially improve the taxpayer’s home that secures the loan, a reduction from the prior limit of $1.0 million. As many consumers finance renovation projects that use our products with home equity loans, limitations on the deductibility of interest on those loans could reduce demand for our products. In addition, recent U.S. federal and state legislative and regulatory policies enacted in response to the COVID-19 pandemic provide various measures of relief for homeowners, primarily in the form of mortgage payment forbearance for homeowners with federally-backed mortgages and temporary moratoria on foreclosures and evictions. It remains uncertain whether or to what extent such relief measures could protect homeowners and what impact they will have on the U.S. real estate market and the U.S. and global economies generally, and our business, financial condition and results of operations may be materially and adversely affected as a result. Future changes to laws or policies relating to these or similar matters could reduce demand for our products and have a material adverse effect on our business, financial condition and results of operations.

Many of our products must comply with local building codes and ordinances and failure of our products to comply with such codes and ordinances may have an adverse effect on our business.

Many of our products must comply with local building codes and ordinances. These codes and ordinances are subject to future government review and interpretation. If our products fail to comply with such local building codes or ordinances, our ability to market and sell such products would be impaired. Also, should these codes and ordinances be amended or expanded, or should new laws and regulations be enacted, we could incur additional costs or become subject to requirements or restrictions that require us to modify our products or adversely affect our ability to market and sell our products. Furthermore, failure of our products to comply with such codes or ordinances could subject us to negative publicity or damage our reputation.

-45-

Comprehensive tax reform legislation could adversely affect our business, financial condition and results of operations.

The Tax Act, among other things, contains significant changes to corporate taxation, including reduction of the corporate tax rate from a top marginal rate of 35% to a flat rate of 21%, limitation of the tax deduction for business interest expense to 30% of “adjusted taxable income” (roughly defined as earnings before interest, taxes, depreciation and amortization in the case of taxable years beginning before January 1, 2022 and earnings before interest and taxes thereafter), limitation of the deduction for net operating losses to 80% of current year taxable income and elimination of net operating loss carrybacks, one time taxation of offshore earnings at reduced rates regardless of whether they are repatriated, current U.S. taxation on foreign earnings earned by certain foreign subsidiaries (subject to certain important exceptions), immediate deductions for certain new investments instead of deductions for depreciation expense over time, and modifying or repealing many business deductions and credits. On March 27, 2020, in response to the COVID-19 pandemic, the CARES Act was signed into law and modifies certain provisions under the Tax Act. The CARES Act, among other things, increased the limitation on the deductibility of business interest to 50% of “adjusted taxable income” for taxable years beginning after December 31, 2018 and before January 1, 2021 and allows taxpayers to elect to compute the limitation on business interest expense for 2020 by using its “adjusted taxable income” from 2019. The CARES Act also suspends the 80% limitation on the deduction of net operating losses for taxable years beginning before January 1, 2021 and enables taxpayers to carry back net operating losses generated in a taxable year beginning after December 31, 2017 and before January 1, 2021 to each of the five preceding taxable years. The CARES Act also contains provisions relating to refundable payroll tax credits, deferment of employer side social security payments, alternative minimum tax credit refunds and technical corrections to tax depreciation methods for qualified improvement property that may impact our business and financial results. The most significant impacts of the Tax Act on our financial results to date have included lowering of the U.S. federal corporate income tax rate and remeasurement of our net deferred tax liabilities. During the year ended September 30, 2018, we recorded a $22.5 million net income tax benefit for the remeasurement of certain deferred taxes, and our effective tax rate for the year was significantly reduced by the recognition of this remeasurement. We expect the limitation under the Tax Act on the tax deduction of interest expense will limit our annual deductions of interest expense as a result of our significant outstanding indebtedness until we reduce our outstanding indebtedness or our adjusted earnings increase by an amount sufficient to permit full deductibility of our interest expense. In the event we are subject to limitations on the deductibility of interest under the Tax Act, we will be permitted an indefinite carryforward, and disallowed interest expense will be deductible in later years, subject to the same 30% limitation (or 50% limitation under the CARES Act for taxable years beginning after December 31, 2018 and before January 1, 2021) and to ownership change limitations under Sections 382 of the Internal Revenue Code of 1986, as amended, or the Code, similar to net operating losses.

We continue to examine the impact that the Tax Act and the CARES Act may have on our business in the longer term. Accordingly, notwithstanding the reduction in the corporate income tax rate, the overall impact on us of the Tax Act and the CARES Act is uncertain.

Our insurance coverage may be inadequate to protect against the potential hazards incident to our business.

We maintain property, business interruption, product liability and casualty insurance coverage, but such insurance may not provide adequate coverage against potential claims, including losses resulting from interruptions in our production capability or product liability claims relating to the products we manufacture. Consistent with market conditions in the insurance industry, premiums and deductibles for some of our insurance policies have been increasing and may, in the future, increase substantially. In some instances, some types of insurance may become available only for reduced amounts of coverage, if at all. In addition, our insurers could deny coverage for claims. If we were to incur a significant liability for which we were not fully insured or that our insurers disputed, our business, financial condition or results of operations could be materially adversely affected.

-46-

We are in the early stages of implementing strategic initiatives related to the use of recycled materials. If we fail to implement these initiatives as expected, our business, financial condition and results of operations could be adversely affected.

Our future financial performance depends in part on our management’s ability to successfully implement our strategic initiatives related to developing our recycling capabilities and other cost savings measures, with an aim to reduce our material costs, improve net manufacturing productivity and enhance our business operations. We are still in the early stages of material substitution across our manufacturing network and realizing the benefits of our investments in recycling. To achieve such benefits, we must recycle materials on a cost-effective basis and efficiently convert these materials into high-quality finished goods. This strategy involves significant risks, including the risks that:

Changes in trade policies, including the imposition of tariffs, could negatively impact our business, financial condition and results of operations.

The current U.S. administration has signaled support for, and in some instances has taken action with respect to, major changes to certain trade policies, such as the imposition of tariffs on imported products and the withdrawal from or renegotiation of certain trade agreements, including the North American Free Trade Agreement. For example, the United States has increased tariffs on certain imports from China, as well as on steel and aluminum products imported from various countries. We procure certain of the raw materials we use in the manufacturing of our products directly or indirectly from outside of the United States. The imposition of tariffs and other potential changes in U.S. trade policy could increase the cost or limit the availability of raw materials, which could hurt our competitive position and adversely impact our business, financial condition and results of operations.

We operate in selectnon-U.S. markets and are subject to the U.S. Foreign Corrupt Practices Act, or the FCPA, as well anti-corruption laws and regulations in other countries, in addition to laws and regulations relating to export controls and economic sanctions. Violations of these laws and regulations could have a material adverse effect on our business, financial condition and results of operations.

We are subject to various U.S. andnon-U.S. anti-corruption laws, including the FCPA, collectively, the Anti-Corruption Laws. These laws generally prohibit companies and their intermediaries from engaging in bribery or making other improper payments of cash (or anything else of value) to government officials and other persons in order to obtain or retain business. Our business operations also must be conducted in compliance with applicable export control and economic sanctions laws and regulations, collectively, the Trade Controls, including rules administered by the U.S. Department of the Treasury’s Office of Foreign Assets Control, the U.S. Department of State, the U.S. Department of Commerce, the United Nations Security Council, and other relevant authorities.

We strive to conduct our business activities in compliance with applicable Anti-Corruption Laws and Trade Controls, and we are not aware of issues of historical noncompliance. However, full compliance cannot be guaranteed. Further expansion outside the United States would likely increase our future legal exposure. Violations of Anti-Corruption Laws or Trade Controls, or even allegations of such violations, could result in civil or criminal penalties, as well as disrupt our business, operations, financial condition and results of operations. Further, changes to the applicable laws and regulations, and/or significant business growth, may result in the need for increased compliance-related resources and costs.

-47-

Risks Relating to Our Indebtedness

Our substantial indebtedness could materially adversely affect our financial condition.

We have, and after this offering will continue to have, a significant amount of indebtedness. As of March 31, 2020, our total indebtedness was $1,248.3 million, including $804.3 million under our first lien credit facility, or the Term Loan Credit Agreement, $129.0 million outstanding under our revolving credit agreement, or the Revolving Credit Agreement, and $315.0 million of 2013 Notes. On May 12, 2020, we issued $350.0 million aggregate principal amount of Senior Notes and satisfied and discharged our obligations with respect to the 2013 Notes, and, on May 14, 2020, we repaid $15.0 million of the outstanding principal under the Revolving Credit Agreement. We refer to the Term Loan Credit Agreement and the Revolving Credit Agreement collectively as the Senior Secured Credit Facilities. During the three months ended March 31, 2020, we borrowed $129.0 million under the Revolving Credit Agreement, including, on March 16, 2020, $89.0 million to enhance our financial flexibility in light of uncertainties resulting from the COVID-19 pandemic. We intend to use net proceeds from this offering to redeem the Senior Notes and to prepay approximately $198.3 million of the outstanding principal amount under our Term Loan Credit Agreement, which currently bears interest at a rate of 5.93% per annum. After giving effect to this offering, on an as adjusted basis, as of March 31, 2020, our total indebtedness would have been approximately $720.0 million.

Our substantial indebtedness could have important consequences to the holders of our Class A common stock, including the following:

In addition, the credit agreements that govern the Senior Secured Credit Facilities contain restrictive covenants that limit our ability to engage in activities that may be in ourlong-term best interest. Our failure to comply with those covenants could result in an event of default which, if not cured or waived, could result in the acceleration of all our debt. See “Description of Certain Indebtedness.”

After giving effect to the redemption of the Senior Notes using net proceeds from this offering, the Term Loan Credit Agreement will mature on May 5, 2024, and the Revolving Credit Agreement will mature on March 9, 2022. We may need to refinance all or a portion of our indebtedness on or before the maturity thereof. We may not be able to obtain such financing on commercially reasonable terms or at all. Failure to refinance our indebtedness could have a material adverse effect on us.

We may not be able to generate sufficient cash to service all of our indebtedness and may be forced to take other actions to satisfy our obligations under our indebtedness, which may not be successful.

Our ability to make scheduled payments on or refinance our debt obligations depends on our financial condition and operating performance, which are subject to prevailing economic and competitive conditions and

-48-

to financial, business, legislative, regulatory and other factors, some of which are beyond our control. We cannot be sure that our business will generate sufficient cash flows from operating activities, or that future borrowings will be available, to permit us to pay the principal, premium, if any, and interest on our indebtedness.

If our cash flows and capital resources are insufficient to fund our debt service obligations, we could face substantial liquidity problems and could be forced to reduce or delay investments and capital expenditures or to dispose of material assets or operations, seek additional debt or equity capital or restructure or refinance our indebtedness. We may not be able to effect any such alternative measures, if necessary, on commercially reasonable terms or at all and, even if successful, those alternative actions may not allow us to meet our scheduled debt service obligations. The credit agreements that govern the Senior Secured Credit Facilities restrict our ability to dispose of assets and use the proceeds from those dispositions and may also restrict our ability to raise debt or equity capital to be used to repay other indebtedness when it becomes due. We may not be able to consummate those dispositions or to obtain proceeds in an amount sufficient to meet any debt service obligations then due. See “Description of Certain Indebtedness.”

Our inability to generate sufficient cash flows to satisfy our debt obligations, or to refinance our indebtedness on commercially reasonable terms or at all, would have a material adverse effect on our financial condition and results of operations.

If we cannot make scheduled payments on our debt, we will be in default, and the lenders under the Senior Secured Credit Facilities could terminate their commitments to loan money, the lenders could foreclose against the assets securing their borrowings and we could be forced into bankruptcy or liquidation. Any of these events could result in you losing all or a portion of your investment in the Class A common stock.

Despite our current level of indebtedness, we and our subsidiaries may still be able to incur substantially more debt. This could further exacerbate the risks to our financial condition described herein.

We and our subsidiaries may be able to incur significant additional indebtedness in the future. Although the credit agreements that govern the Senior Secured Credit Facilities contain restrictions on the incurrence of additional indebtedness, these restrictions are subject to a number of qualifications and exceptions, and the additional indebtedness incurred in compliance with these restrictions could be substantial. These restrictions also will not prevent us from incurring obligations that do not constitute indebtedness. As of March 31, 2020 and September 30, 2019, we had commitments available for borrowing under the Revolving Credit Agreement of up to $150.0 million. During the three months ended March 31, 2020, we borrowed $129.0 million under the Revolving Credit Agreement, including, on March 16, 2020, $89.0 million to enhance our financial flexibility in light of uncertainties resulting from the COVID-19 pandemic. We also have the option to increase the commitments under the Revolving Credit Agreement by up to $100.0 million, subject to certain conditions. Because our borrowing capacity under the Revolving Credit Agreement depends, in part, on inventory, accounts receivable and other assets that fluctuate from time to time, the amount of commitments may not reflect actual borrowing capacity. In addition, the Term Loan Credit Agreement provides for additional uncommitted incremental term loans of up to $150.0 million, with additional incremental term loans available if certain leverage ratios are maintained. All of those borrowings would be secured byfirst-priority liens on our property.

The terms of the credit agreements that govern the Senior Secured Credit Facilities restrict our current and future operations, including our ability to respond to changes or to take certain actions.

The credit agreements that govern the Senior Secured Credit Facilities contain a number of restrictive covenants that impose significant operating and financial restrictions on us and may limit our ability to engage in acts that may be in ourlong-term best interest. See “Description of Certain Indebtedness.” The indebtedness under the Senior Secured Credit Facilities will continue to be outstanding following completion of this offering. The restrictive covenants under the Senior Secured Credit Facilities include restrictions on our ability to:

-49-

As a result of these restrictions, we may be:

These restrictions may affect our ability to grow in accordance with our strategy. If we incur indebtedness provided or guaranteed by the U.S. Government, including pursuant to the CARES Act, we may be subject to additional restrictions on our operations, including limitations on employee headcount and compensation reductions and other cost reduction activities.

A breach of the covenants or restrictions under the credit agreements that govern the Senior Secured Credit Facilities could result in a default or an event of default. Such a default may allow the creditors to accelerate the related debt and may result in the acceleration of any other debt to which across-acceleration orcross-default provision applies. In addition, an event of default under the Senior Secured Credit Facilities would permit the lenders under the Revolving Credit Agreement to terminate all commitments to extend further credit under such facility. Furthermore, if we were unable to repay the amounts due and payable under the Senior Secured Credit Facilities, those lenders under each facility could proceed against the collateral granted to them to secure that indebtedness. In the event our lenders were to accelerate the repayment of our indebtedness, we and our subsidiaries may not have sufficient assets to repay that indebtedness. In exacerbated or prolonged circumstances, one or more of these events could result in our bankruptcy or liquidation.

We rely on available borrowings under the Revolving Credit Agreement for cash to operate our business, and the availability of credit under the Revolving Credit Agreement may be subject to significant fluctuation.

In addition to cash we generate from our business, our principal existing source of cash is borrowings available under the Revolving Credit Agreement. As of March 31, 2020 and September 30, 2019, we had commitments available to be borrowed under the Revolving Credit Agreement of up to $150.0 million. During the three months ended March 31, 2020, we borrowed $129.0 million under the Revolving Credit Agreement, including, on March 16, 2020, $89.0 million to enhance our financial flexibility in light of uncertainties resulting from the COVID-19 pandemic. We also have the option to increase the commitments under the Revolving Credit Agreement by up to $100.0 million, subject to certain conditions. There are limitations on our ability to incur the full $150.0 million of existing commitments under the Revolving Credit Agreement. Availability will be limited

-50-

to the lesser of a borrowing base and $150.0 million. The borrowing base is calculated on a monthly (or more frequent under certain circumstances) valuation of our inventory, accounts receivable and certain cash balances. As a result, our access to credit under the Revolving Credit Agreement is potentially subject to significant fluctuation, depending on the value of the borrowingbase-eligible assets as of any measurement date. On June 5, 2020, we entered into the RCA Amendment, which established $8.5 million of commitments for FILO Loans under the Revolving Credit Agreement. The FILO Loans are available to be drawn in a single disbursement on or prior to December 31, 2020. The availability of the FILO Loans will be subject to satisfaction of certain conditions at the time of borrowing, including the value of borrowing-base eligible assets at the time of borrowing. Under the terms of the Revolving Credit Agreement as amended by the RCA Amendment, FILO Loans may be borrowed against increased percentages of borrowing-base eligible assets (as compared to the percentages of borrowing-base eligible assets applicable to all other loans under the Revolving Credit Agreement). The RCA Amendment did not increase the total aggregate amount of commitments under the Revolving Credit Agreement. Borrowing of FILO Loans under the Revolving Credit Agreement will reduce the total aggregate commitments available for revolving loans for so long as the FILO Loans remain outstanding. If borrowed, the FILO Loans will mature on December 4, 2021. There is no assurance that we will be able to draw on the FILO Loans at any time. The inability to borrow under the Revolving Credit Agreement may adversely affect our liquidity, financial position and results of operations.

Our variable rate indebtedness subjects us to interest rate risk, which could cause our debt service obligations to increase significantly.

Borrowings under the Senior Secured Credit Facilities are at variable rates of interest and expose us to interest rate risk. If interest rates were to increase, our debt service obligations on the variable rate indebtedness would increase even though the amount borrowed remained the same, and our net income and cash flows, including cash available for servicing our indebtedness, will correspondingly decrease. Based on amounts outstanding as of March 31, 2020 and September 30, 2019, each 100 basis point change in interest rates would result in a $9.3 million and $8.1 million change, respectively, in annual interest expense on our indebtedness under the Senior Secured Credit Facilities. See “Description of Certain Indebtedness.” We do not currently hedge the risk of changes in the interest rate under the Senior Secured Credit Facilities. In the future, we may enter into interest rate swaps that involve the exchange of floating for fixed rate interest payments or other instruments in order to reduce interest rate volatility. However, even if we do enter into interest rate swaps, we may not maintain interest rate swaps with respect to all of our variable rate indebtedness, and any swaps or other instruments we enter into may not fully mitigate our interest rate risk.

Uncertainty relating to the LIBOR calculation process and potential phasing out of LIBOR in the future may adversely affect our financing costs.

Currently, the Revolving Credit Agreement and the Term Loan Credit Agreement utilize the London Interbank Offered Rate, or LIBOR, or various alternative methods set forth in the Revolving Credit Agreement and the Term Loan Credit Agreement to calculate interest on any borrowings. National and international regulators and law enforcement agencies have conducted investigations into a number of rates or indices known as “reference rates.” Actions by such regulators and law enforcement agencies may result in changes to the manner in which certain reference rates are determined, their discontinuance or the establishment of alternative reference rates. In particular, on July 27, 2017, the Chief Executive of the United Kingdom Financial Conduct Authority, or the FCA, which regulates LIBOR, announced that the FCA will no longer persuade or compel banks to submit rates for the calculation of LIBOR after 2021. Such announcement indicates that the continuation of LIBOR on the current basis cannot and will not be guaranteed after 2021. As a result, it appears highly likely that LIBOR will be discontinued or modified by 2021.

At this time, it is not possible to predict the effect that these developments, any discontinuance, modification or other reforms to LIBOR or any other reference rate, or the establishment of alternative reference rates may have on LIBOR, other benchmarks or LIBOR-based debt instruments. Uncertainty as to the nature of such

-51-

potential discontinuance, modification, alternative reference rates or other reforms could cause the interest rate calculated for the Revolving Credit Agreement and the Term Loan Credit Agreement to be materially different than expected, which could have a material adverse effect on our financing costs.

A lowering or withdrawal of the ratings assigned to our debt by rating agencies may increase our future borrowing costs and reduce our access to capital.

Our debt currently has anon-investment grade rating, and any rating assigned could be lowered or withdrawn entirely by a rating agency if, in that rating agency’s judgment, future circumstances relating to the basis of the rating, such as adverse changes, so warrant. Any future lowering of our ratings likely would make it more difficult or more expensive for us to obtain additional debt financing.

Risks Relating to This Offering and Ownership of Our Class A Common Stock

The market price of our Class A common stock may be volatile or may decline steeply or suddenly regardless of our operating performance. You may not be able to resell your shares at or above the initial public offering price and may lose all or part of your investment.

There has been no prior public market for our common stock prior to our initial public offering. The initial public offering price for our Class A common stock will be determined through negotiations among the underwriters and us, and may vary from the market price of our Class A common stock following this offering. If you purchase shares of Class A common stock in this offering, you may not be able to resell those shares at or above the initial public offering price. The market price of our Class A common stock may fluctuate or decline significantly in response to numerous factors, many of which are beyond our control, including:

-52-

In addition, extreme price and volume fluctuations in the stock markets have affected and continue to affect the stock prices of many companies. Often, their stock prices have fluctuated in ways unrelated or disproportionate to their operating performance. In the past, stockholders have filed securities class action litigation against companies following periods of market volatility. Such securities litigation, if instituted against us, could subject us to substantial costs, divert resources and the attention of management from our business and seriously harm our business.

An active trading market for our Class A common stock may never develop or be sustained.

We have been approved to list our Class A common stock on the NYSE under the symbol “AZEK”. However, we cannot be certain that an active trading market for our Class A common stock will develop on that exchange or elsewhere or, if developed, that any market will be sustained. Furthermore, we cannot be certain that we will continue to satisfy the continued listing standards of the NYSE. If we fail to satisfy the continued listing standards, we could bede-listed, which would have a material adverse effect on the liquidity and price of our Class A common stock.

Future sales of our Class A common stock and other actions by existing stockholders could cause our stock price to decline.

If our existing stockholders, including employees, who have or obtain equity, sell or indicate an intention to sell, substantial amounts of our Class A common stock in the public market after thelock-up and legal restrictions on resale discussed in this prospectus lapse, the trading price of our Class A common stock could decline. Upon the completion of this offering, we will have outstanding a total of 113,575,687 shares of Class A common stock and 33,068,963 shares of Class B common stock (assuming the underwriters exercise their option to purchase additional shares in full). Of these shares, only the shares of Class A common stock sold in this offering will be freely tradable without restrictions or further registration under the Securities Act of 1933, as amended, or the Securities Act, except for any shares held by persons who are not our “affiliates” as defined in Rule 144 under the Securities Act and who have complied with the holding period requirements of Rule 144 under the Securities Act.

Subject to certain exceptions described under “Underwriting,” we and all of our stockholders have entered into or will enter into agreements with the underwriters under which we and they have agreed or will agree, subject to certain exceptions, not to dispose of any shares of common stock, any options or warrants to purchase any shares of common stock or any securities convertible into or exchangeable for or that represent the right to receive shares of common stock during the period from the date of this prospectus continuing through the date 180 days after the date of this prospectus.

When the lock up period in these agreements expires, we and our stockholders will be able to sell shares in the public market. In addition, Barclays Capital Inc. and BofA Securities, Inc. may, together in their sole discretion, release all or some portion of the shares subject to the lock up agreements prior to the expiration of thelock-up period. See “Shares Eligible for Future Sale.” Sales of a substantial number of such shares, or the perception that such sales may occur, upon the expiration or early release of the securities subject to the lock up agreements could cause the price of our Class A common stock to decline or make it more difficult for you to sell your Class A common stock at a time and price that you deem appropriate.

-53-

In addition, the Sponsors have demand and “piggy-back” registration rights with respect to our common stock that they will retain following this offering. See “Shares Eligible for Future Sale” for a discussion of the shares of our common stock that may be sold into the public market in the future, including our common stock held by the Sponsors.

We currently do not intend to pay dividends on our Class A common stock, and our indebtedness could limit our ability to pay dividends on our Class A common stock.

After completion of this offering, we currently do not anticipate paying any cash dividends for the foreseeable future. In addition, the terms of our indebtedness limit our ability to pay dividends or make other distributions on, or to repurchase or redeem, shares of our capital stock. See “Description of Certain Indebtedness.” Consequently, your only opportunity to achieve a return on your investment in our company will be if the market price of our Class A common stock appreciates and you sell your shares at a profit. There is no guarantee that the price of our Class A common stock that will prevail in the market after this offering will ever exceed the price that you pay. For more information, see “Dividend Policy.” We cannot be sure that we will pay dividends in the future or continue to pay dividends if we do commence paying dividends.

If securities or industry analysts either do not publish research about us or publish inaccurate or unfavorable research about us, our business or our market, if they adversely change their recommendations regarding our Class A common stock, or if our operating results do not meet their expectations or any financial guidance we may provide, the trading price or trading volume of our Class A common stock could decline.

The trading market for our Class A common stock will be influenced in part by the research and reports that securities or industry analysts may publish about us, our business, our market or our competitors. If one or more of the analysts initiate research with an unfavorable rating or downgrade our Class A common stock, provide a more favorable recommendation regarding our competitors or publish inaccurate or unfavorable research about our business, our Class A common stock price would likely decline. If one or more analysts who may cover us were to cease coverage of us or fail to regularly publish reports on us, we could lose visibility in the financial markets, which in turn could cause the trading price or trading volume of our Class A common stock to decline.

In addition, if we do not meet any financial guidance that we may provide to the public or if we do not meet expectations of securities analysts or investors, the trading price of our Class A common stock could decline significantly. Our operating results may fluctuate significantly from period to period as a result of changes in a variety of factors affecting us or our industry, many of which are difficult to predict. As a result, we may experience challenges in forecasting our operating results for future periods.

Future issuances of our Class A common stock, including upon conversion of our Class B common stock, could result in significant dilution to our stockholders, dilute the voting power of our Class A common stock and depress the market price of our Class A common stock.

Future issuances of our Class A common stock could result in dilution to existing holders of our Class A common stock. Such issuances, or the perception that such issuances may occur, could depress the market price of our Class A common stock. We may issue additional equity securities from time to time, including equity securities that could have rights senior to those of our Class A common stock. As a result, purchasers of shares of Class A common stock in this offering bear the risk that future issuances of equity securities may reduce the value of their shares and dilute their ownership interests. Also, to the extent outstanding stock-based awards are issued or become vested, there will be further dilution to the holders of our Class A common stock.

We have a dual-class capitalization structure, which may pose a particular risk of dilution to the holders of our Class A common stock. Each share of our Class B common stock, which is not entitled to vote for the election, removal and replacement of our directors, is convertible at any time at the option of the holder of the

-54-

Class B common stock into one share of Class A common stock, which is entitled to vote for the election, removal and replacement of our directors. Accordingly, conversion of shares of our Class B common stock into shares of our Class A common stock would dilute holders of Class A common stock, including holders of shares purchased in this offering, in terms of voting power in connection with the election, removal and replacement of our directors.

We will incur increased costs and devote substantial management time as a result of operating as a public company.

As a public company, we will incur significant legal, accounting, investor relations and other expenses that we did not incur as a private company. For example, we will be subject to the reporting requirements of the Exchange Act, and will be required to comply with the applicable requirements of the Sarbanes-Oxley Act and theDodd-Frank Wall Street Reform and Consumer Protection Act, as well as rules and regulations subsequently implemented by the SEC and the NYSE, including the establishment and maintenance of effective disclosure and financial controls and changes in corporate governance practices. We expect that the requirements of operating as a public company will increase our legal and financial compliance and investor relations costs and will make some activities more time consuming and costly. In addition, we expect that our management and other personnel will need to divert attention from operational and other business matters to devote substantial time to these public company requirements. In particular, we expect to incur significant expenses and devote substantial management effort toward ensuring compliance with the requirements of Section 404 of theSarbanes-Oxley Act, which will increase when we are no longer an emerging growth company, as defined by the JOBS Act. We will also need to establish an investor relations function. We cannot predict or estimate the amount of additional costs we may incur as a result of becoming a public company or the timing of those costs.

Public company reporting and disclosure obligations and a broader shareholder base as a result of our status as a public company may expose us to a greater risk of claims by shareholders, and we may experience threatened or actual litigation from time to time. If claims asserted in such litigation are successful, our business and operating results could be adversely affected, and, even if claims do not result in litigation or are resolved in our favor, these claims, and the time and resources necessary to resolve them and the diversion of management resources, could adversely affect our business and operating results.

We are an “emerging growth company” and will be able to avail ourselves of reduced disclosure requirements applicable to emerging growth companies, which could make our common stock less attractive to investors.

We are an emerging growth company, as defined in the JOBS Act, and we intend to take advantage of certain exemptions from various reporting requirements that are applicable to other public companies that are not emerging growth companies including not being required to comply with the auditor attestation requirements of Section 404(b) of the Sarbanes-Oxley Act, reduced disclosure obligations regarding executive compensation in our periodic reports and proxy statements and exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and stockholder approval of any golden parachute payments not previously approved. In addition, under the JOBS Act, emerging growth companies can delay the adoption of certain new or revised accounting standards until those standards would otherwise apply to private companies. We have elected to avail ourselves of this exemption from new or revised accounting standards and, therefore, we will not be subject to the same new or revised accounting standards as other public companies that are not emerging growth companies or that have opted out of using such extended transition period, which may make comparison of our financial statements with those of other public companies more difficult. We cannot predict if investors will find our Class A common stock less attractive because we may rely on these exemptions. If some investors find our Class A common stock less attractive as a result, there may be a less active trading market for our Class A common stock and our stock price may be more volatile.

We may take advantage of these reporting exemptions until we are no longer an emerging growth company or, with respect to adoption of certain new or revised accounting standards, until we irrevocably elect to opt out

-55-

of using the extended transition period. We will remain an emerging growth company until the earliest of (i) the last day of the fiscal year in which we have total annual gross revenues of $1.07 billion or more; (ii) the last day of our fiscal year following the fifth anniversary of the date of the completion of this offering; (iii) the date on which we have issued more than $1 billion in nonconvertible debt during the previous three years; or (iv) the date on which we are deemed to be a large accelerated filer under the rules of the SEC.

If you purchase shares of our Class A common stock in this offering, you will experience substantial and immediate dilution in net tangible book value per share.

The assumed initial public offering price of $20.00 per share, the midpoint of the estimated offering price range set forth on the cover page of this prospectus, is substantially higher than the net tangible book value per share of our outstanding Class A common stock immediately after this offering. If you purchase shares of Class A common stock in this offering, you will experience substantial and immediate dilution in the pro forma net tangible book value per share of $21.72 per share as of March 31, 2020, based on the assumed initial public offering price of $20.00 per share. That is because the price that you pay will be substantially greater than the pro forma net tangible book value per share of Class A common stock that you acquire. This dilution is due in large part to the fact that our earlier investors paid substantially less than the initial public offering price when they purchased their shares of our capital stock. You will experience additional dilution to the extent that new securities are issued under our equity incentive plans or we issue additional shares of Class A common stock or Class B common stock in the future. See “Dilution.”

Risks Relating to Our Organizational Structure

Provisions in our certificate of incorporation and bylaws, each of which will be in effect upon the completion of this offering, could make a merger, tender offer or proxy contest difficult, thereby depressing the trading price of our Class A common stock.

Our certificate of incorporation and bylaws, each of which will be in effect upon the completion of this offering, contain provisions that could depress the trading price of our Class A common stock by acting to discourage, delay or prevent a change of control of our company or changes in our management that our stockholders may deem advantageous. In particular, our certificate of incorporation and bylaws:

-56-

Section 203 of the Delaware General Corporation Law, or the DGCL, prohibits a publicly held Delaware corporation from engaging in a business combination with an interested stockholder, generally a person, individually or together with any other interested stockholder, who owns or within the last three years has owned 15% of our voting stock, unless the business combination is approved in a prescribed manner. We have elected to opt out of Section 203 of the DGCL. However, our certificate of incorporation will contain a provision that is of similar effect, except that it will exempt from its scope the Sponsors, any of their affiliates and certain of their respective direct or indirect transferees as described under “Description of Capital Stock—Anti-Takeover Provisions.”

Any provision of our certificate of incorporation, our bylaws or Delaware law that has the effect of delaying or deterring a change in control could limit the opportunity for our stockholders to receive a premium for their shares of Class A common stock and could also affect the price that some investors are willing to pay for our Class A common stock. See “Description of Capital Stock—Anti-Takeover Provisions.”

Our certificate of incorporation, which will be in effect upon the completion of this offering, will provide that the Court of Chancery of the State of Delaware will be the exclusive forum for a wide range of disputes between us and our stockholders, which could limit our stockholders’ ability to obtain a favorable judicial forum for disputes with us or our directors, officers or employees.

Our certificate of incorporation, which will be in effect upon the completion of this offering, will provide that the Court of Chancery of the State of Delaware (or, if no state court located within the State of Delaware has jurisdiction, the federal district court for the District of Delaware) is the exclusive forum for the following types of actions or proceedings under Delaware statutory or common law:

This provision would not apply to suits brought to enforce a duty or liability created by the Exchange Act or any other claim for which the U.S. federal courts have exclusive jurisdiction. Any person or entity purchasing or otherwise acquiring any interest in shares of our capital stock will be deemed to have notice of, and consented to, the exclusive-forum provisions in our certificate of incorporation.

The exclusive-forum provisions will also provide that, unless we consent in writing to the selection of an alternative forum, the federal district courts of the United States will be the exclusive forum for the resolution of

-57-

any complaint asserting a cause of action arising under the Securities Act, subject to and contingent upon a final adjudication in the State of Delaware of the enforceability of such exclusive-forum provision. However, there is substantial uncertainty as to whether a court would enforce the exclusive-forum provisions relating to causes of action arising under the Securities Act. If a court were to find any of the exclusive-forum provisions in our certificate of incorporation to be inapplicable or unenforceable in an action, we may incur additional costs associated with resolving the dispute in other jurisdictions, which could seriously harm our business.

These exclusive-forum provisions may limit a stockholder’s ability to bring a claim in a judicial forum that it finds favorable for disputes with us or our directors, officers or employees, which may discourage lawsuits against us and our directors, officers and employees, although our stockholders will not be deemed to have waived our compliance with federal securities laws and the rules and regulations thereunder.

Our certificate of incorporation will contain a provision renouncing our interest and expectancy in certain corporate opportunities.

Under our certificate of incorporation, neither of the Sponsors nor any of their respective portfolio companies, funds or other affiliates, nor any of their officers, directors, employees, agents, stockholders, members or partners will have any duty to refrain from engaging, directly or indirectly, in the same business activities, similar business activities, or lines of business in which we operate. In addition, our certificate of incorporation provides that, to the fullest extent permitted by law, no officer or director of ours who is also an officer, director, employee, agent, stockholder, member, partner or affiliate of either of the Sponsors will be liable to us or our stockholders for breach of any fiduciary duty by reason of the fact that any such individual directs a corporate opportunity to a Sponsor, instead of to us, or does not communicate information regarding a corporate opportunity to us that the officer, director, employee, agent, stockholder, member, partner or affiliate has directed to such Sponsor. For example, a director of our company who also serves as an officer, director, employee, agent, stockholder, member, partner or affiliate of one of the Sponsors, or any of their respective portfolio companies, funds, or other affiliates may pursue certain acquisitions or other opportunities that may be complementary to our business and, as a result, such acquisition or other opportunities may not be available to us. These potential conflicts of interest could have a material adverse effect on our business, financial condition, results of operations or prospects if attractive corporate opportunities are allocated by either of the Sponsors to itself or themselves or their respective portfolio companies, funds or other affiliates instead of to us. A description of our obligations related to corporate opportunities under our certificate of incorporation are more fully described in “Description of Capital Stock—Corporate Opportunity.”

We are a holding company and rely on dividends, distributions, and other payments, advances and transfers of funds from our subsidiaries to meet our obligations.

We are a holding company that does not conduct any business operations of our own. As a result, we are largely dependent upon cash distributions and other transfers from our direct and indirect subsidiaries to meet our obligations. The agreements governing the indebtedness of our subsidiaries impose restrictions on our subsidiaries’ ability to pay dividends or other distributions to us. See “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Liquidity and Capital Resources.” Each of our subsidiaries is a distinct legal entity, and under certain circumstances legal and contractual restrictions may limit our ability to obtain cash from them and we may be limited in our ability to cause any future joint ventures to distribute their earnings to us. The deterioration of the earnings from, or other available assets of, our subsidiaries for any reason could impair their ability to make distributions to us.

We continue to be controlled by the Sponsors, and the Sponsors’ interests may conflict with our interests and the interests of other stockholders.

Following this offering, the Sponsors will beneficially own 75.1% of our common stock (or 72.7% if the underwriters exercise their option to purchase additional shares in full). Pursuant to the stockholders agreement, or the Stockholders Agreement, that will be entered into among the Sponsors and us in connection with this

-58-

offering, the Sponsors will have the right to designate a number of individuals to be included in the slate of nominees for election to our board of directors equal to the greater of up to six directors and the number of directors comprising a majority of our board of directors for so long as the Sponsors collectively own 50% or more of the outstanding shares of our common stock. Except as otherwise described in this prospectus, for so long as the Sponsors collectively own less than 50% of the outstanding shares of our common stock, the Sponsors will have the right to designate that number of individuals to be included in the slate of nominees for election to our board of directors (rounded up to the nearest whole number or, if such rounding would cause the Sponsors to have the right to elect a majority of our board of directors, rounded to the nearest whole number) that is the same percentage of the total number of directors comprising our board as the collective percentage of common stock owned by the Sponsors. Because our board of directors will be divided into three staggered classes, the Sponsors may be able to influence or control our affairs and policies even after they cease to own a majority of our outstanding Class A common stock during the period in which the Sponsors’ nominees finish their terms as members of our board, but in any event no longer than would be permitted under applicable law and the NYSE listing requirements. Therefore, following the completion of this offering and for so long as the Sponsors continue to own 50% or more of our common stock, individuals affiliated with the Sponsors will have the power to elect a majority of our directors and will have effective control over the outcome of votes on all matters requiring approval by our board of directors or our stockholders regardless of whether other stockholders believe such matter is in our best interests.

In addition, following the completion of this offering, the Stockholders Agreement will provide that, for so long as the Sponsors collectively own at least 30% of the outstanding shares of our common stock, certain significant corporate actions will require the prior written consent of each of the Sponsors, subject to certain exceptions. If either Sponsor owns less than 10% of the outstanding shares of our common stock, such action will not be subject to the approval of such Sponsor and the shares of common stock owned by such Sponsor will be excluded in calculating the 30% threshold. See “Certain Relationships and Related Party Transactions—Stockholders Agreement.”

These actions include:

-59-

The interests of the Sponsors and their affiliates, including funds affiliated with the Sponsors, could conflict with or differ from our interests or the interests of our other stockholders. For example, the concentration of ownership held by the Sponsors could delay, defer or prevent a change in control of our company or impede a merger, takeover or other business combination which may otherwise be favorable for us. Additionally, the Sponsors and their affiliates are in the business of making investments in companies and may, from time to time, acquire and hold interests in or provide advice to businesses that compete directly or indirectly with us, or are suppliers or customers of ours. Any such investment may increase the potential for the conflicts of interest discussed in this risk factor. So long as funds affiliated with the Sponsors continue to directly or indirectly own a significant amount of our equity, even if such amount is less than 50%, the Sponsors will continue to be able to substantially influence or effectively control our ability to enter into corporate transactions.

We are a “controlled company” within the meaning of the NYSE rules and, as a result, qualify for and intend to rely on exemptions from certain corporate governance requirements.

Following this offering, affiliates of the Sponsors will continue to control a majority of the voting power of our outstanding voting stock, and as a result we will be a controlled company within the meaning of the NYSE corporate governance standards. Under the NYSE rules, a company of which more than 50% of the voting power is held by another person or group of persons acting together is a controlled company and may elect not to comply with certain corporate governance requirements, including the requirements that:

We intend to utilize these exemptions as long as we remain a controlled company. As a result, we may not have a majority of independent directors and our nominating and corporate governance committee and compensation committee may not consist entirely of independent directors. Accordingly, you may not have the same protections afforded to stockholders of companies that are subject to all of the corporate governance requirements of the NYSE.

Pursuant to Rule10C-1 under the Exchange Act, the NYSE has adopted amendments to its listing standards that require, among other things, that:

As a “controlled company,” we will not be subject to these compensation committee independence requirements.

-60-

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This prospectus containsforward-looking statements. Many statements included in this prospectus that are not statements of historical fact, including statements about our beliefs and expectations, are forward-looking statements.Forward-looking statements are inherently subject to risks and uncertainties, some of which cannot be predicted or quantified. These risks and other factors include, but are not limited to, those listed under “Risk Factors.” In some cases, you can identifyforward-looking statements by terminology such as “anticipate,” “believe,” “continue,” “could,” “estimate,” “expect,” “intend,” “may,” “might,” “objective,” “ongoing,” “plan,” “predict,” “project,” “potential,” “should,” “will,” “would” or the negative of these terms or other comparable terminology. In particular, statements about potential new products and product innovation, statements regarding the potential impact of the COVID-19 pandemic, statements about the markets in which we operate, including growth of our various markets and growth in the use of engineered products, and our expectations, beliefs, plans, strategies, objectives, prospects, assumptions or future events or performance contained in this prospectus under the headings “Prospectus Summary,” “Risk Factors,” “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” and “Business” are forward-looking statements. Forward-looking statements include, but are not limited to, statements about:

Some of the factors that could cause actual results to differ materially from those expressed or implied by the forward-looking statements include:

-61-

We have based theforward-looking statements contained in this prospectus primarily on our current expectations and projections about future events and trends that we believe may affect our business, financial condition, results of operations, prospects, business strategy and financial needs. The outcome of the events described in theseforward-looking statements is subject to risks, uncertainties, assumptions and other factors described under “Risk Factors” and elsewhere in this prospectus. These risks are not exhaustive. Other sections of this prospectus include additional factors that could adversely affect our business and financial performance. Moreover, we operate in a very competitive and rapidly changing environment. New risks and uncertainties emerge from time to time, and it is not possible for us to predict all risks and uncertainties that could have an impact on theforward-looking statements contained in this prospectus. We cannot be sure that the results, events and circumstances reflected in theforward-looking statements will be achieved or occur, and actual results, events or circumstances could differ materially from those described in, or implied by, theforward-looking statements.

In addition, statements that “we believe” and similar statements reflect our beliefs and opinions on the relevant subject. These statements are based upon information available to us as of the date of this prospectus, and while we believe that information forms a reasonable basis for such statements, that information may be limited or incomplete, and our statements should not be read to indicate that we have conducted an exhaustive inquiry into, or review of, all potentially available relevant information.

Theforward-looking statements made in this prospectus relate only to events as of the date on which such statements are made. We undertake no obligation to update anyforward-looking statements after the date of this prospectus or to conform such statements to actual results or revised expectations, except as required by law.

-62-

MARKET AND INDUSTRY DATA

We obtained the industry and market and competitive position data used throughout this prospectus from our own internal estimates and research, as well as from industry and general publications. Internal estimates are derived from information released by industry analysts and third-party sources, our internal research and our industry experience, and are based on assumptions made by us based on that information and our knowledge of our industry and market, which we believe to be reasonable. Certain industry and market data and forecasts in this prospectus are based on the independent research of Principia and Freedonia. In addition, while we believe the industry and market data included in this prospectus were based on reasonable assumptions when prepared, the industry and market data involve risks and uncertainties and are subject to change based on various factors, including those discussed in “Risk Factors.” In particular, the market and industry estimates in this prospectus were prepared prior to the COVID-19 pandemic. The data provided by Principia is as of October 2019 and presents final data for 2018. Principia’s 2019 data is expected to be released in the second half of 2020. We expect that the COVID-19 pandemic may materially reduce the growth of various of the markets discussed in this prospectus, and we cannot predict the extent to which these estimates will be affected. These and other factors could cause results to differ materially from those expressed in, or implied by, the estimates made by independent parties and by us. Furthermore, we cannot assure you that a third party using different methods to assemble, analyze or compute industry and market data would obtain the same results.

Information based on estimates, forecasts, projections, market research or similar methodologies is inherently subject to uncertainties, and actual events or circumstances may differ materially from events and circumstances that are assumed in this information. In some cases, we do not expressly refer to the sources from which data is derived.

-63-

USE OF PROCEEDS

We estimate that we will receive net proceeds from this offering of approximately $577.1 million (or approximately $665.4 million if the underwriters exercise their option to purchase additional shares of Class A common stock from us in full) based upon an assumed initial public offering price of $20.00 per share, the midpoint of the estimated price range set forth on the cover page of this prospectus, after deducting assumed underwriting discounts and commissions and estimated offering expenses payable by us.

A $1.00 increase (decrease) in the assumed initial public offering price of $20.00 per share of Class A common stock, the midpoint of the estimated price range set forth on the cover page of this prospectus, would increase (decrease) the net proceeds to us from this offering by approximately $29.5 million, assuming that the number of shares of Class A common stock offered by us, as set forth on the cover page of this prospectus, remains the same, and after deducting assumed underwriting discounts and commissions and estimated offering expenses payable by us. Similarly, each increase (decrease) of 1.0 million shares in the number of shares of Class A common stock offered by us would increase (decrease) the net proceeds to us from this offering by approximately $18.9 million, assuming the assumed initial public offering price of $20.00 per share remains the same, and after deducting assumed underwriting discounts and commissions and estimated offering expenses payable by us.

We intend to use net proceeds received by us from this offering first to redeem the Senior Notes, plus accrued and unpaid interest thereon, and then to prepay approximately $198.3 million of the outstanding principal amount under our Term Loan Credit Agreement. As of May 28, 2020, $350.0 million aggregate principal amount of the Senior Notes was outstanding. We intend to redeem the Senior Notes at a redemption price equal to 107.125% of the aggregate principal amount outstanding plus accrued and unpaid interest to the redemption date; see “Description of Certain Indebtedness—Senior Notes.” As of March 31, 2020, we had $804.3 million of principal outstanding under our Term Loan Credit Agreement. The Senior Notes mature on May 15, 2025 and bear interest at an annual rate of 9.500%. After giving effect to the redemption of the Senior Notes using net proceeds from this offering, the Term Loan Credit Agreement will mature on May 5, 2024 and currently bears interest at a rate of 5.93% per annum. To the extent the proceeds we receive in this offering are lower than currently estimated, we may, if necessary, elect not to prepay any amounts under our Term Loan Credit Agreement. If the net proceeds we receive in this offering are insufficient to redeem the Senior Notes in full, we may redeem up to 40% of the outstanding principal amount of the Senior Notes.

We will use any additional net proceeds raised in this offering for general corporate purposes, including working capital, operating expenses and capital expenditures. We may also use a portion of any additional net proceeds we receive from this offering for acquisitions or other strategic investments, although we do not currently have any specific plans to do so.

We intend to invest the net proceeds to us from this offering that are not used as described above (or pending such use) in investment-grade, interest-bearing instruments. The precise allocation of funds among these uses will depend upon future developments in or affecting our business and the emergence of future opportunities.

-64-

CORPORATE CONVERSION

We currently operate as a Delaware limited liability company under the name CPG Newco LLC. CPG Newco LLC is a holding company which holds all of the limited liability company interests in CPG International LLC, the entity which directly and indirectly holds all of the equity interests in our operating subsidiaries. Prior to the effectiveness of the registration statement of which this prospectus forms a part, CPG Newco LLC will convert into a Delaware corporation pursuant to a statutory conversion and will change its name to The AZEK Company Inc. In addition, a special purpose entity, CPG Holdco LLC, which was formed at the time of the acquisition of CPG Newco LLC solely for the purpose of holding membership interests in CPG Newco LLC and that will continue to hold such interests until the Corporate Conversion, will be merged with and into us. In this prospectus, we refer to all of the transactions related to our conversion into a corporation and the merger described above as the Corporate Conversion.

The purpose of the Corporate Conversion is to reorganize our corporate structure so that the entity that is offering Class A common stock to the public in this offering is a corporation rather than a limited liability company.

In conjunction with the Corporate Conversion, all of our outstanding membership interests will be converted into an aggregate of 108,162,741 shares of our common stock. 75,093,778 shares of common stock will be designated Class A common stock and 33,068,963 shares of common stock will be designated Class B common stock. The number of shares of Class A common stock and Class B common stock issuable in connection with the Corporate Conversion will be determined pursuant to the applicable provisions of the plan of conversion.

As a result of the Corporate Conversion, The AZEK Company Inc. will succeed to all of the property and assets of CPG Newco LLC and will succeed to all of the debts and obligations of CPG Newco LLC. The AZEK Company Inc. will be governed by a certificate of incorporation filed with the Delaware Secretary of State and bylaws, the material provisions of which are described under the heading “Description of Capital Stock.” On the effective date of the Corporate Conversion, each of our directors and officers will be as described elsewhere in this prospectus. See “Management.”

Except as otherwise noted herein, the Consolidated Financial Statements included elsewhere in this prospectus are those of CPG Newco LLC and its consolidated operations. We do not expect that the Corporate Conversion will have an effect on our results of operations.

-65-

DIVIDEND POLICY

We did not declare any dividends in fiscal years 2019 and 2018, and we currently do not anticipate paying any cash dividends after this offering and for the foreseeable future. Instead, we anticipate that all of our earnings on our common stock in the foreseeable future will be used to repay debt, for working capital, to support our operations and to finance the growth and development of our business. Any future determination relating to dividend policy will be made at the discretion of our board of directors and will depend on a number of factors, including restrictions in our current and future debt instruments, our future earnings, capital requirements, financial condition, prospects, and applicable Delaware law, which provides that dividends are only payable out of surplus or current net profits.

As a holding company, our ability to pay dividends depends on our receipt of cash dividends from our operating subsidiaries. Our ability to pay dividends will therefore be restricted as a result of restrictions on their ability to pay dividends to us, including under the agreements governing our existing and any future indebtedness. See “Risk Factors—Risks Relating to This Offering and Ownership of Our Class A Common Stock,” “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Liquidity and Capital Resources” and “Description of Certain Indebtedness.”

-66-

CAPITALIZATION

The following table describes our cash, cash equivalentsand available-for-sale securities and capitalization as of March 31, 2020:

You should read the following information together with the information contained under the headings “Use of Proceeds,” “Selected Consolidated Financial Data” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and our Consolidated Financial Statements and the related Notes appearing at the end of this prospectus.

-67-

Assuming no change in the number of shares offered by us as set forth on the cover page of this prospectus, a $1.00 increase (decrease) in the assumed initial public offering price of $20.00 per share of Class A common stock (the midpoint of the price range set forth on the cover page of this prospectus) would increase (decrease) each ofadditional paid-in capital and total equity by $29.5 million and would decrease (increase) total debt by $29.5 million, after deducting assumed underwriting discounts and commissions and estimated offering expenses payable by us.

Similarly, a 1.0 million share increase (decrease) in the number of shares offered by us, as set forth on the cover of this prospectus, would increase (decrease) each ofadditional paid-in capital and total equity by $18.9 million and would decrease (increase) total debt by $18.9 million, after deducting assumed underwriting discounts and commissions and estimated offering expenses payable by us, based on the assumed initial public offering price of $20.00 per share, which is the midpoint of the price range set forth on the cover of this prospectus, remained the same.

The table above gives effect to: (1) the split of our single unit, representing all of our limited liability company interests, into 108,162,741 units, consisting of 75,093,778 Class A units and 33,068,963 Class B units; (2) the completion of the Corporate Conversion, including our merger with CPG Holdco LLC, our direct parent entity, following which we will be the surviving entity and a one-for-one conversion of our Class A units into shares of Class A common stock and a one-for-one conversion of our Class B units into shares of Class B common stock; (3) the distribution by the Partnership of shares of Class A common stock and shares of Class B common stock to the Sponsors and the other holders of partnership interests in the Partnership as described in “Corporate Structure” and “Corporate Conversion;” (4) no exercise of the underwriters’ option to purchase additional shares of our common stock; and (5) the effectiveness of our certificate of incorporation and bylaws in connection with the completion of this offering.

The table above does not give effect to or reflect the following shares (all of which are calculated based on an assumed initial public offering price of $20.00 per share, which is the mid-point of the estimated offering price range set forth on the cover page of this prospectus): (1) 5,144,202 unvested shares of Class A common stock issued in exchange for unvested Profits Interests; (2) 4,710,177 shares of Class A common stock issuable upon exercise of options, with an exercise price that will be equal to the initial public offering price per share, which options will be issued in connection with the exchange of Profits Interests for shares of Class A common stock (1,030,833 shares will be issuable in respect of vested options and 3,679,344 shares will be issuable in respect of unvested options); (3) 236,843 shares of Class A common stock issuable upon the vesting of restricted stock units and 968,423 shares of Class A common stock issuable upon exercise of options, with an exercise price that will be equal to the initial public offering price per share, in each case that will be granted to certain directors, officers and employees in connection with this offering; and (4) 4,555,642 shares of Class A common stock available for further issuance under our 2020 Omnibus Incentive Plan. See “Executive Compensation—Post Offering Compensation—2020 Omnibus Incentive Compensation Plan.”

-68-

DILUTION

If you invest in our Class A common stock, your ownership interest in us will be diluted to the extent of the difference between the initial public offering price in this offering per share of our Class A common stock and the pro forma as adjusted net tangible book value per share of our common stock upon consummation of this offering. Pro forma net tangible book value per share represents the book value of our total tangible assets less the book value of our total liabilities divided by the total number of shares of common stock then issued and outstanding, on a pro forma basis after giving effect to the Corporate Conversion and our redemption of all outstanding 2013 Notes, including a loss on extinguishment of approximately $2 million to be recorded in the three months ending June 30, 2020.

Pro forma net tangible book deficit as of March 31, 2020 was $787.3 million, or $6.80 per share based on 115,851,352 shares of our common stock outstanding. After giving effect to (i) our sale of 31,250,000 shares of Class A common stock in this offering, at an assumed initial public offering price of $20.00 per share (the midpoint of the price range set forth on the cover page of this prospectus), and after deducting assumed underwriting discounts and commissions and estimated offering expenses payable by us, (ii) the application of the estimated net proceeds from this offering as described under “Use of Proceeds,” including the write-off of deferred financing costs and debt discount in connection therewith, and (iii) compensation expense expected to be recognized upon the consummation of this offering, our pro forma as adjusted net tangible book deficit as of March 31, 2020 would have been $252.0 million, or $1.72 per share (assuming no exercise of the underwriters’ option to purchase additional shares of our Class A common stock). This amount represents an immediate increase in pro forma net tangible book value of $5.08 per share of Class A common stock to our existing investors before this offering and an immediate dilution of $21.72 per share to new investors purchasing Class A common stock in this offering. The following table illustrates this dilution per share:

A $1.00 increase (decrease) in the assumed initial public offering price of $20.00 per share, which is the midpoint of the price range set forth on the cover page of this prospectus, would decrease (increase) our pro forma as adjusted net tangible book deficit per share after this offering by $0.20 and increase (decrease) dilution per share to new investors purchasing Class A common stock in this offering by $0.80, assuming that the number of shares offered by us, as set forth on the cover page of this prospectus, remains the same and after deducting assumed underwriting discounts and commissions and estimated offering expenses by us. An increase (decrease) of 1.0 million shares in the number of shares offered by us, as set forth on the cover page of this prospectus, would decrease (increase) our pro forma as adjusted net tangible book deficit after this offering by $18.9 million and $0.14 per share and decrease (increase) the dilution per share to new investors purchasing Class A common stock in this offering by $0.14, assuming no change in the assumed initial public offering price per share and after deducting assumed underwriting discounts and commissions and estimated offering expenses by us.

If the underwriters exercise in full their option to purchase 4,687,500 additional shares of Class A common stock in this offering, our pro forma as adjusted net tangible book deficit per share after this offering would be $1.66 and the dilution in pro forma as adjusted net tangible book deficit per share to new investors purchasing Class A common stock in this offering would be $21.66, assuming no change in the initial public offering price per share and after deducting estimated underwriting discounts and commissions and estimated offering expenses payable by us.

-69-

The following table summarizes, on a pro forma as adjusted basis as of March 31, 2020, the differences between the number of shares of Class A common stock purchased from us, the total consideration paid and the average price per share paid by existing stockholders and to be paid by the new investors purchasing shares of Class A common stock in this offering, at an assumed initial public offering price of $20.00 per share, which is the midpoint of the price range set forth on the cover page of this prospectus, before deducting the underwriting discounts and commissions and offering expenses payable by us in connection with this offering.

A $1.00 increase (decrease) in the assumed initial public offering price of $20.00 per share, which is the midpoint of the price range set forth on the cover page of this prospectus, would increase (decrease) the total consideration paid by new investors in this offering by $31.3 million and, in the case of an increase, would increase the percentage of total consideration paid by new investors by 1.2 percentage points and, in the case of a decrease, would decrease the percentage of total consideration paid by new investors by 1.3 percentage points, assuming that the number of shares offered by us, as set forth on the cover page of this prospectus, remains the same and before deducting the underwriting discounts and commissions and offering expenses payable by us in connection with this offering. An increase (decrease) of 1.0 million shares in the number of shares offered by us, as set forth on the cover page of this prospectus, would increase (decrease) the total consideration paid by new investors by $20.0 million and, in the case of an increase, would increase the percentage of total consideration paid by new investors by 0.8 percentage points and, in the case of a decrease, would decrease the percentage of total consideration paid by new investors by 0.8 percentage points, assuming no change in the assumed initial public offering price per share and before deducting the underwriting discounts and commissions and offering expenses payable by us in connection with this offering.

The table above assumes no exercise of the underwriters’ option to purchase additional shares in this offering. If the underwriters’ option to purchase additional shares is fully exercised, the number of shares of our common stock held by existing stockholders would be reduced to 74.9% of the total number of shares of our common stock outstanding after this offering, and the number of shares of Class A common stock held by new investors purchasing common stock in this offering would be increased to 25.1% of the total number of shares of our common stock outstanding after this offering.

The discussion and tables above gives effect to: (1) the split of our single unit, representing all of our limited liability company interests, into 108,162,741 units, consisting of 75,093,778 Class A units and 33,068,963 Class B units; (2) the completion of the Corporate Conversion, including our merger with CPG Holdco LLC, our direct parent entity, following which we will be the surviving entity and aone-for-one conversion of our Class A units into shares of Class A common stock and aone-for-one conversion of our Class B units into shares of Class B common stock; (3) the distribution by the Partnership of shares of Class A common stock and shares of Class B common stock to the Sponsors and the other holders of partnership interests in the Partnership as described in “Corporate Structure” and “Corporate Conversion”, including the issuance of 5,144,202 unvested shares of Class A common stock issued in exchange for unvested Profits Interests, and (4) the effectiveness of our certificate of incorporation and bylaws in connection with the completion of this offering.

The discussion and tables above do not give effect to or reflect the following shares (all of which are calculated based on an assumed initial public offering price of $20.00 per share, which is themid-point of the estimated offering price range set forth on the cover page of this prospectus): (1) 4,710,177 shares of Class A common stock issuable upon exercise of options, with an exercise price that will be equal to the initial public offering price per share, which options will be issued in connection with the exchange of Profits Interests for

-70-

shares of Class A common stock (1,030,833 shares will be issuable in respect of vested options and 3,679,344 shares will be issuable in respect of unvested options); (2) 236,843 shares of Class A common stock issuable upon the vesting of restricted stock units and 968,423 shares of Class A common stock issuable upon exercise of options, with an exercise price that will be equal to the initial public offering price per share, in each case that will be granted to certain directors, officers and employees in connection with this offering; and (3) 4,555,642 shares of Class A common stock available for further issuance under our 2020 Omnibus Incentive Plan. See “Executive Compensation—Post Offering Compensation—2020 Omnibus Incentive Compensation Plan.”

We expect to require additional capital to fund our current and future operating plans. To the extent additional capital is raised through the sale of equity or convertible debt securities, the issuance of these securities could result in further dilution to our stockholders. See “Risk Factors—Risks Relating to This Offering and Ownership of Our Class A Common Stock—Future issuances of our Class A common stock, including upon conversion of our Class B common stock, could result in significant dilution to our stockholders, dilute the voting power of our Class A common stock and depress the market price of our Class A common stock.”

-71-

SELECTED CONSOLIDATED FINANCIAL DATA

The selected consolidated statements of income data and selected consolidated statements of cash flow data for fiscal years 2019 and 2018 and the selected consolidated balance sheet data as of September 30, 2019 and September 30, 2018 have been derived from our Consolidated Financial Statements included elsewhere in this prospectus. The selected consolidated statement of income data and summary consolidated statement of cash flow data for fiscal year 2017 have been derived from our Consolidated Financial Statements not included in this prospectus. The selected consolidated statements of income data and selected consolidated statements of cash flow data for the six months ended March 31, 2020 and 2019 and the selected consolidated balance sheet data as of March 31, 2020 have been derived from our unaudited Consolidated Financial Statements included elsewhere in this prospectus. In the opinion of management, our unaudited Consolidated Financial Statements were prepared on the same basis as our audited Consolidated Financial Statements and include all adjustments necessary for a fair presentation of the financial information set forth in those statements.

Our historical results are not necessarily indicative of future operating results and our results for the six months ended March 31, 2020 are not necessarily indicative of the results that may be expected for the full fiscal year or any other period. The selected financial data set forth below should be read together with “Capitalization,” “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and our Consolidated Financial Statements and related Notes included elsewhere in this prospectus.

-72-

Non-GAAP Financial Measures

To supplement our Consolidated Financial Statements prepared and presented in accordance with generally accepted accounting principles in the United States, or GAAP, we use certainnon-GAAP performance financial measures, as described below, to provide investors with additional useful information about our financial performance, to enhance the overall understanding of our past performance and future prospects and to allow for greater transparency with respect to important metrics used by our management for financial and operational decision-making. We are presenting thesenon-GAAP financial measures to assist investors in seeing our financial performance from management’s view and because we believe they provide an additional tool for investors to use in comparing our core financial performance over multiple periods with other companies in our industry. Our GAAP financial results include significant expenses that are not indicative of our ongoing operations as detailed in the tables below.

However,non-GAAP financial measures have limitations in their usefulness to investors because they have no standardized meaning prescribed by GAAP and are not prepared under any comprehensive set of accounting rules or principles. In addition,non-GAAP financial measures may be calculated differently from, and therefore may not be directly comparable to, similarly titled measures used by other companies. As a result,non-GAAP financial measures should be viewed as supplementing, and not as an alternative or substitute for, our Consolidated Financial Statements prepared and presented in accordance with GAAP.