#1THE AZEK COMPANY 34 INVESTOR PRESENTATION September 2021 Ⓡ 17 AZEK LISTED NYSE#21111 Important Notice DISCLAIMER This presentation contains "forward-looking statements" within the meaning of the safe harbor provisions of the United States Private Securities Litigation Reform Act of 1995. All statements other than statements of historical facts contained in this presentation, including statements regarding future operations are forward-looking statements. In some cases, forward looking statements may be identified by words such as "believe," "may," "will," "estimate," "continue," "anticipate," "intend," "could," "would," "expect," "objective," "plan," "potential," "seek," "grow," "target," "if," and similar expressions intended to identify forward-looking statements. Projected financial information, including our future financial and operating performance, growth and margin expansion targets, objective and goals as well as statements regarding our guidance and outlook, are forward- looking statements. Other forward-looking statements may include, without limitation, market data and other statements about the markets in which we operate, including the economic environment and supply and demand balance, wood conversion expectations as well as growth of our various markets and our expectations and ability to share in such growth; statements about future pricing for our products or our raw materials and our ability to successfully manage market risk and control or reduce costs; statements with respect to our ability to meet future goals and targets, including the environmental, social and governance targets we aspire to; statements about our future expansion plans, capital investments, capacity targets and other future strategic initiatives; statements about potential new products and product innovation; statements about the potential impact of the COVID-19 pandemic; and any other statements about our future business objectives, plans, strategies and initiatives, including our competitive position and prospects. We have based these forward-looking statements on our current expectations and projections about future events and trends that we believe may affect our financial condition, results of operations, business strategy, short-term and long-term business operations and objectives and financial needs. These forward-looking statements are subject to a number of risks, uncertainties and assumptions, including those described in the section titled "Risk Factors" set forth in our Annual Report on Form 10-K, Quarterly Reports on Form 10-Q and in our other filings with the U.S. Securities and Exchange Commission ("SEC"). Moreover, we operate in a very competitive and rapidly changing environment. New risks emerge from time to time. It is not possible for us to predict all risks, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements we may make. In light of these risks, uncertainties and assumptions, the future events and trends discussed in this presentation may not occur and actual results may differ materially and adversely from those anticipated or implied in the forward-looking statements. You should read this presentation with the understanding that our actual future results, levels of activity, performance and events and circumstances may be materially different from what we expect. Non-GAAP Measures This presentation (i) contains non-GAAP measures, (ii) uses terms which are not generally used in presentations made in accordance with GAAP, (iii) uses terms which are not measures of financial condition or profitability and (iv) contains terms which are unlikely to be comparable to similar measures used by other companies in our industry. As a result, these financial measures have limitations as analytical and comparative tools and you should not consider these items in isolation, or as a substitute for analysis of our results as reported under GAAP. For a reconciliation of non- GAAP measures used in this presentation to the closest comparable GAAP measure, see the Appendix hereto. 2#3THE OUR PURPOSE Revolutionize Outdoor Living to Create a More Sustainable Future OUR VISION To Be The Leading Sustainable Outdoor Living Company in North America OUR VALUES Always Do The Right Thing Starts & Ends With The Customer ● ● AZEK COMPANY ● ● ● Value Every Individual Lead Through Innovation Better Today Than Yesterday The Best Team Wins As the innovative manufacturer of beautiful, low-maintenance and environmentally sustainable outdoor living products, we are deeply committed to making a lasting impact on the world by accelerating the use of recycled materials.#4INDUSTRY-LEADING RESIDENTIAL PORTFOLIO TimberTech Go Against the Grain. Outdoor Living Decking Railing DrySpace Porch Fasteners Lighting AZEK Home Exteriors Trim Cladding Exteriors Shingle Siding Beadboard Column Wraps Board & Batten#5A UNIQUE, LONG-TERM GROWTH STORY WELL-POSITIONED FOR SUSTAINABLE GROWTH & MARGIN EXPANSION GROWING MARKETS BENEFITTING FROM MATERIAL CONVERSION THE INNOVATION LEADER IN OUTDOOR LIVING & EXTERIORS A PORTFOLIO APPROACH TO GROWTH & MARGIN EXPANSION SUSTAINABILITY IS CORE TO OUR BUSINESS THE ● COMPANY ● ● ● ● Combined ~$20B market for Outdoor Living, Exteriors and Adjacencies¹ Resilient Outdoor Living, R&R demand; strong housing fundamentals Proprietary consumer market research study shows nearly half of consumers in the market for wood decking would consider our types of high-performance, low maintenance materials Superior product aesthetics, inspired by nature and enabled by advanced technology #1 or #2 position in Decking and Exteriors Broad product portfolio - only significant player in both Outdoor Living and Exteriors Early innings of recycling opportunity across multiple raw material inputs Vertically integrated U.S. manufacturing network and culture of continuous improvement Products across our portfolio are made from up to 100% recycled material Differentiated material science in two distinct recycle technologies - PVC and PE Our goal: 1B pounds of recycled material used annually by the end of 2026 14% 10-year Net Sales CAGR Residential business² 8 - 10% Long-term Sales Growth Target ~Double digit growth in our Residential Segment 1 ¹ Total U.S. market sales of wood and wood-look siding, pavers, outdoor furniture and outdoor lighting were approximately $11 billion in 2018 according to Freedonia, and, when combined with the total U.S. market sales of deck, rail and trim according to Principia in 2020, represent an approximately $20 billion market. Ten Year Net Sales compound annual growth rate, or CAGR, refers to the CAGR for the ten years ended September 30, 2020, on a trailing twelve-month basis. Our growth over this period reflects the contribution to net sales of acquisitions, including the acquisitions of VAST Enterprises and TimberTech in fiscal year 2012 and Ultralox and Versatex in fiscal year 2018. 5 10 -14% Long-term Adjusted EBITDA Growth Target#6EXECUTION DRIVING GROWTH & IMPROVING PROFITABILITY $ in millions $633 2017 12.4% CAGR $682 7.8% 2018 Net Sales $794 16.5% 2019 $899 13.2% 2020 Adjusted EBITDA $1,097mm / 28.9% LTM 6/30/21 Net Sales / YoY % Growth $131 THE AZEK. COMPANY 20.7% 2017 +300 bps margin improvement $150 22.0% 2018 $180 22.6% 2019 $214 23.7% 2020 YOY Sales Growth / Adjusted EBITDA Margin $259mm/23.6% LTM 6/30/21 Adj. EBITDA / % Margin o Multi-year strategic growth & margin expansion plan underway o Investments in sales, marketing, Lean Six Sigma and recycling LEADER IN BRANDED OUTDOOR LIVING & EXTERIORS PRODUCTS TimberTech® Go Against the Grain. AZEK Exteriors o 30 year history with legacy of product innovation o 20+ years leader in high-performance decking and trim¹ o ~1,700 employees, including ~200 person salesforce o Our extensive network consists of 4,200+ pro dealers, 150+ distributor branch locations and tens of thousands of contractors o Network built over 20+ years o 99% of sales in North America o Domestic manufacturing Source: Company information and management estimates. Note: FY ended September 30. Refer to Appendix for reconciliation for Adjusted EBITDA and Adjusted EBITDA margin. 1 Market leadership is in capped composite and capped polymer decking and PVC trim. 6#7OUR CORE MARKETS ARE POISED FOR SUSTAINABLE GROWTH THE BROADER OUTDOOR LIVING CATEGORY REPRESENTS A ~$20 BILLION OPPORTUNITY Outdoor Living Spaces Rank #1 in Popularity Amongst Architects LARGE INSTALL BASE NEEDING REPLACEMENT ~56mm installed decks in the U.S. and nearly half of them are beyond their useful life. THE AZEK. COMPANY Wood Conversion to AZEK Material Types Fuels Long-term Market Growth ~$9B CORE OUTDOOR LIVING DECK, RAIL & EXTERIOR TRIM EXPECTED ~11% CAGR (2020-2023) $4.1B $2.6B $2.3B $11.0B + ~$11B ADJ¹ HOME EXTERIOR & OUTDOOR LIVING ADJACENCIES LARGE, HIGH-GROWTH MARKETS Decking Railing Exterior Trim Home Exterior & Outdoor Living Adjacencies e.g., home exterior siding, outdoor furniture, cabinetry and lighting Sources: American Institute of Architects (AIA), Principia, North America Deck & Rail Association (NADRA). See APPENDIX page 21 for details. ¹ Total U.S. market sales of wood and wood-look siding, pavers, outdoor furniture and outdoor lighting were approximately $11 billion in 2018 according to Freedonia. 7#8SIGNIFICANT WOOD CONVERSION OPPORTUNITY, EARLY IN THE JOURNEY COMBINED, WOOD STILL REPRESENTS ~64% OF OUR CORE MARKETS TODAY +77% Conversion Opportunity in Decking Pressure Treated Wood Decking o Prone to moisture damage, fading, rot o Requires maintenance and staining o Inconsistent visuals over time THE AZEK COMPANY TimberTech AZEK o Long-term beauty o 50-Year fade and stain warranty o More environmentally sustainable than pressure treated decking 17.8% +59% Conversion Opportunity in Exterior Trim Composite Decking Gaining Share ~50% (% of total market linear feet) 2017 +67% Conversion Opportunity in Railing 18.6% 2018 20.1% 2019 21.6% 2020 I J I We believe the wood alternative decking market could reach ~50% share over time (vs. today's ~22%) Long-Term Material Conversion Opportunity in Decking See APPENDIX page 21 for details and sources. 8#9DIFFERENTIATED & PROPRIETARY CAPABILITY CREATES COMPETITIVE ADVANTAGE AND NEW PRODUCT INNOVATION GROWTH OPPORTUNITIES Leader in Capped Polymer Decking Technology (TimberTech AZEK) ● ● ● #1 premium product in the market Realistic look of premium hardwoods Class A Flame Spread Rating in the TimberTech AZEK Vintage Collection Multi-width options (5.5", 7.25") Patented Panelized Rail System Leads To Increased Contractor Productivity ● Unique UltraLox InterlockingⓇ Technology THE AZEK. COMPANY Proprietary Capped Composite Streaking Technology (TimberTech PRO) ● ~35% Five-Year Blended New Product Vitality¹ Leading Exteriors Portfolio With Unique Trim And Siding Technology ● More realistic and complex visuals of any capped composite on the market Capped on 4 sides ● Workability of wood, with low maintenance, durability benefit of engineered materials Functional innovations that drive contractor productivity ¹ We define Five-Year New Product Vitality as the percentage of gross sales in fiscal 2020 derived from products first introduced in fiscal 2020 and the four preceding years, excluding gross sales from Versatex, Ultralox and Return Polymers. 9#10REVOLUTIONIZING OUTDOOR LIVING TO CREATE A MORE SUSTAINABLE FUTURE GROWTH UNDERPINNED BY ESG LEADERSHIP RECYCLING o ~400mm lbs. of waste diverted from landfills in 2020 through our recycle programs o ~99% of scrap generated at Wilmington, OH and Scranton, PA facilities is re-used o ~80% & ~50% of the content in our TimberTech capped composite and capped polymer decking, respectively, is recycled material SOCIAL o Committed to increase the minimum wage of hourly employees to $15 by the end of calendar '21 o Focus on Safety -45% improvement in reportable events since 2016 o ~50% executive team and ~40% Board member gender / ethnic diversity THE AZEK. COMPANY ALWAYS DO THE RIGHT THING BETTER TODAY THAN YESTERDAY TEAM WINS THE BEST STARTS WITH THE CUSTOMER AND ENDS THE AZEK COMPANY LEAD THROUGH INNOVATION Our Core Values Serve as Our 'True North' in Every Decision and Interaction VALUE EVERY INDIVIDUAL ENVIRONMENTAL o 9.2% decrease in our carbon intensity (tCO2e per $1 million net sales) from fiscal 2019 to fiscal 2020 o Majority of Residential products are recyclable at the end of life o TimberTech decking has a lower carbon footprint than its pine alternative according to the results of our peer reviewed Life Cycle Assessment GOVERNANCE o Formal Board oversight of sustainability and ESG o Separate Board Chairperson and CEO o ESG accountability added as a component of individual performance and compensation under our 2021 management annual incentive plan o Launched our Inaugural ESG Report in 2021 o United Nations Global Compact Signatory Our FULL-CIRCLE ESG Ambitions AZEK FULL-CIRCLE PRODUCTS. PEOPLE. PLANET. Reduce the Carbon Footprint Across The AZEK Company value chain and set ambitious targets in alignment with climate science Aspire to use ONE BILLION POUNDS Of recycled material annually by the end of 2026 Positively impact our employees, customers and communities through Purposeful & Inclusive Engagement 10#11AZEK'S VALUE CREATION MODEL SUSTAINABILITY IS A KEY DRIVER Growth Margin Material Conversion Brand Market Conversion THE AZEK. COMPANY ATTRACTIVE MARKETS Integrated Manufacturing Product Innovation Outdoor Living CORE STRENGTHS Material Science FOCUSED STRATEGY Multi-Channel Expansion Consumer Journey R&R Focus Customer Connection Strategic M&A AZEK Integrated Management System (AIMS) & Recycle Expansion Powerful Tailwinds Attractive Margins Accelerating Performance 11#12WELL-POSITIONED FOR SUSTAINABLE, LONG-TERM GROWTH OFFERING THE BROADEST, MOST BEAUTIFUL AND TECHNOLOGICALLY ADVANCED PORTFOLIO ILLUSTRATIVE LONG-TERM RESIDENTAL SALES GROWTH EQUATION Market Growth ~4-6% KEY DRIVERS O Conversion & Outdoor Living ~2-3% O Material Conversion / Secular Growth New Products O Channel Growth THE AZEK COMPANY Growth Initiatives ~2-3% ~Double Digit Long-Term Residential Sales Growth Target COMPETITIVE DIFFERENTIATION O Capability to drive innovation O Breadth of portfolio - Outdoor Living, Exteriors and Adjacency opportunities o Uniquely positioned for wood conversion Source: Management Estimates 12#13ATTRACTIVE MARGIN PROFILE WITH SIGNIFICANT UPSIDE MULTIPLE LEVERS TO DRIVE MARGIN EXPANSION ADJUSTED EBITDA MARGIN EXPANSION EQUATION Price / Mix KEY DRIVERS VOLUME GROWTH AIMS Recycle Expansion SG&A Leverage POLICY DEPLOYMENT The process of defining, managing, and cascading The AZEK Company's strategy to ensure individual goals and actions are aligned to the company's objectives. THE AZEK COMPANY AZEK INTEGRATED MANAGEMENT SYSTEM DIGITAL Utilization of software, automation, and digital tools to minimize mistakes, increase efficiency, and improving customer experience. Long-Term EBITDA Margin SALES & OPERATIONS PLANNING A recurring, integrated, business-planning process that balances our sales and production forecasts to ensure we meet our service and financial commitments in the most efficient manner. (AIMS) AIMS +500 bps Objective (vs. fiscal year end 2019) LEAN SIX SIGMA A combination of methodologies that focuses on eliminating waste (Lean) and reducing variation (Six Sigma) by using data-driven decision making and root-cause problem solving. STAGE GATE A project management process to efficiently launch new products that utilizes a cross- functional team to make key decisions at various stages of development. 2020+ RECYCLE EXPANSION Enable recycling capability Cost reduce formulations 2018 In-House / Vertical Integration 2019+ Source: Management Estimates 13#14REPURPOSING WITH A PURPOSE GROWTH UNDERPINNED BY ESG LEADERSHIP We are deeply committed to making a lasting impact on the world by accelerating our use of recycled materials, thus, enabling us to divert hundreds of millions of pounds of waste from landfills each year, reduce our carbon footprint and drive margin expansion. ~400 MILLION ONE BILLION 54% Pounds of scrap and waste diverted from landfills through our recycling programs in fiscal 2020. We aspire to use 1 billion pounds of recycled materially annually by the end of 2026. Percentage of extruded materials manufactured from recycled materials in fiscal 2020. THE AZEK. COMPANY AZEK FULL-CIRCLE PRODUCTS PEOPLE PLANE 2020 ESG REPORT Our high-performance engineered decking is more environmentally sustainable than traditional wood decking. o ~80% recycled material in our TimberTech capped composite decking; 15% lower global warming potential than sustainably harvested pine decking¹ o ~50% recycled material in our TimberTech capped polymer decking; 5% lower global warming potential than sustainably harvested pine decking¹ o We are advancing the circular economy by diverting hundreds of millions of pounds of waste from landfills each year, turning it into beautiful products that can last upwards of 25 to 50 years and are recyclable at the end of life To learn more about how we're creating goods that do good, please see our 2020 ESG Report. ¹ According to the results of our peer-reviewed Life Cycle Assessment. 14#15MOTIVE F TON TimberTech® BETTER TECH. BETTER DECK. BETTER PLANET. PRO#16SELECT 2021 NEW PRODUCT LAUNCHES A IKON TimberTechⓇ AZEK LANDMARK COLLECTION - American Walnut LANDMARK COLLECTION - Castle Gate THE FAZEK. COMPANY ======== ====== AZEK Exteriors AZEK SHINGLE SIDING WITH PAINTPRO™ TECHNOLOGY VERSATEX CANVAS SERIES - Turner Oak & Kitami Select 2021 Awards GOLDEN HAMMER AWARD LMC Building Business Together. BUILDER K BRAND USE STUDY 2021 2021 HBSDealer Golden Hammer Award Winners: TimberTech Landmark Collection and AZEK Shingle Siding with Paint Pro Technology LMC: AZEK Shingle Siding with PaintPro Technology Named a Best New Product of 2021 at LMC Annual Meeting 2021 Builder Brand Use Study Builder Magazine TimberTech Decking Ranked #1 in Overall Quality 16#17A UNIQUE, LONG-TERM GROWTH STORY WELL-POSITIONED FOR SUSTAINABLE GROWTH & MARGIN EXPANSION > GROWING MARKETS BENEFITTING FROM MATERIAL CONVERSION > THE INNOVATION LEADER IN OUTDOOR LIVING & EXTERIORS >A PORTFOLIO APPROACH TO GROWTH & MARGIN EXPANSION > SUSTAINABILITY IS CORE TO OUR BUSINESS THE AZEK. COMPANY 17#18THE NAN CLEEF AZEK COMPANY PANTO LONGE APPENDIX G 1 + mm 000 AZEK LISTED NYSE#19AZEK'S LEGACY OF INNOVATION DRIVING CATEGORY LEADERSHIP IN OUTDOOR LIVING CPG 1983 Plastic Sheets 1990 Bathroom Partitions 1997 Launched Composite Decking 1999 Launched Branded AZEK Trim 1980-2009 2002 Bathroom Partitions Acquired Capitol and Santana Products 2007 PVC Decking Acquired Procell Decking Systems (founded 2004) 2012 Launched Next-Gen Capped PVC Decking 2015 INTERNAL DEVELOPMENT PRODUCT LAUNCHES AND KEY MILESTONES THE AZEK COMPANY Launch of Premium Vintage & Legacy Decking Collections 2010-2015 2012 Composite Decking / Fasteners Acquired TimberTech (founded 1997) TimberTech® 2016 2017 2018 THE AZEK. COMPANY Introduced High Privacy Bathroom Partitions Developed Multi-Year New Product Roadmap Recycling Initiatives "Project Green" 2018 Corporate Re-branding, New Values & Mission Rollout 2017 Rail - Acquired UltraLox (founded 2012) L ULTRALOX" ACQUISITIONS New Management Team 2019 TimberTech EDGE Decking, Multi-Width Decking, PaintPro Trim 2019 Opened Chicago Training Center and HQ 2019 Outdoor Living - 2020 TimberTech Rebrands, Digital Reset, Advertising Launched TimberTech PRO Reserve and EDGE Prime+ Decking collections 2016 - 2021+ 2018 Trim - Acquired Versatex (founded 2004) VERSATEX® 2020 Completed Initial Public Offering, Listing on NYSE 2020 2021 2021 2020 Launched FULL-CIRCLE PVC Recycling Program Launched Landmark Collection decking Issued Inaugural ESG Report PVC Recycling - Acquired Return Polymers (founded 1992) POLYMERS POLYNER PROCESS & RECOVERY 19#20BROAD & COMPLIMENTARY PORTFOLIO (% 2020 Net Sales) Decking, Rail & Accessories 62% PRODUCT Residential Repair & Remodel 24% Exteriors 14% Commercial 69% THE AZEK COMPANY 16% APPLICATION Residential New Construction 15% Commercial EXTENSIVE GEOGRAPHIC COVERAGE IN U.S. AND CANADA ~200 PERSON SALESFORCE 150+ DISTRIBUTOR BRANCHES 4,200+ PRO DEALERS 6860 & Indmelict TimberTec AZE OH Ma DO DECKING DIFFERENTLY INTRODUCING SHE MULTI-WIDTH BOAR 20#21LARGE, HIGH GROWTH ~$9B CORE MARKET BENEFITING FROM MATERIAL CONVERSION AZEK MATERIAL TYPES EXPECTED TO GROW AT AN ~11% CAGR FROM 2020 TO 2023E (OR ~1.7X MARKET) EXTERIOR TRIM $2.3B Market PVC 12% Wood 42% O +59% Conversion Opportunity Wood 67% Other 46% Composite & Aluminum 16% RAIL $2.6B Market Other 17% +67% Conversion Opportunity THE AZEK COMPANY Market Growth Driven Primarily by Material Conversion EARLY INNINGS OF LONG-TERM MATERIAL CONVERSION TREND Composite Decking Gaining Share (% of total market linear feet) DECKING $4.1B Market Other Wood 65% 17.8% 2017 +77% Conversion Opportunity ~56mm installed decks³ in the U.S., many of which are wood and nearly half of them are beyond their useful life.(4) 18.6% Composite 22% 2018 20.1% Other 1% 2019 Premium Wood 12% 21.6% 2020 EXPECTED MARKET GROWTH DECKING ('20-'23E L-F) Decking Market: 8% CAGR AZEK Material Types: 12% CAGR 1 EXTERIOR TRIM - (20-'23E L-F) Exterior Trim Market: 5% CAGR 1 AZEK Material Types: 9% CAGR RAILING ('20 - '23E L-F) Rail Market: 8% CAGR AZEK Material Types: 13% CAGR ¹ - Source: Principia Demand Builder Briefs July 2021; 2020 market size and '20- '23E linear feet projections. Principia's Trim market definition excludes broader applications such as tongue and groove profiles, sheets, thresholds and column wraps. Note: Material share %'s are based on volume demanded in billions of linear feet. Decking, Rail and Trim conversion opportunity is based on volume demanded for wood solutions in billions of linear feet. Trim conversion opportunity also includes engineered wood (~17% of total trim market). Other includes (A) hollow vinyl, plastic lumber and metal for decking, (B) iron, stainless steel, hollow vinyl and other plastic for railing and (C) engineered wood, fiber cement, vinyl, other polymer composite and other for trim. 1. AZEK material types for decking category includes composite and PVC decking, rail category includes composite and aluminum rail, and exterior trim category includes PVC trim. 2. Includes premium hardwoods, cedar and redwood. 3. Principia estimates. 4. North America Deck & Rail Association (NADRA) estimates as of 2019. 21#22SUPERIOR VALUE PROPOSITION VS. TRADITIONAL MATERIALS AZEK'S PRODUCTS OFFER: SUPERIOR AESTHETICS, DURABILITY, EASE-OF-INSTALLATION, REDUCED MAINTENANCE AND LOWER TOTAL LIFECYCLE COSTS Value proposition, consumer engagement and education drive conversion. THE AZEK COMPANY Decking Material Costs Labor and Other Costs $8.8K $0.9 INSTALLATION COST (¹) (2) $7.9 $9.1K $1.5 $7.6 TimberTech EDGE $9.5K EDGE Prime+ Trading up to a better-looking multi- colored board would only cost an extra ~$400. Pressure Treated Lumber EDGE Prime (Mono) ~16% of total cost attributed to deck materials LIFECYCLE COST (¹) (³) Maintenance Costs Installation Costs $19.0K $10.2 $8.8 Pressure Treated Lumber $11.9K $2.8 $9.1 TimberTech EDGE Prime (Mono) ~38% savings in total lifecycle costs EDGE Source: Management estimates. 1. Assumptions and estimates are based on AZEK market knowledge and feedback from decking-focused contractors with experience installing TimberTech and wood decking products. This is an illustrative example; actual costs for any particular installation can vary significantly. Assumes pressure treated lumber deck board pricing of $1.18 per linear foot based on Dec. 2020 average compiled prices. 2. Total Deck Project Installation Costs represent the total aggregate costs of an initial deck installation for a 16' x 20' elevated deck and exclude costs associated with the installation of rail or stairs. 3. Total Deck Life-Cycle Costs represent both the aggregate costs of an initial deck installation and estimated maintenance costs over a 25-year period for a 16' x 20' elevated deck excluding potential replacement costs. 22#23THE BROADER OUTDOOR LIVING CATEGORY REPRESENTS ~$20 BILLION1¹ OPPORTUNITY OUTDOOR LIVING SPACES MOST POPULAR AMONGST ARCHITECTS AIA SURVEY: OUTDOOR LIVING POPULARITY ² 74% 59% Multi-year trend: Outdoor living spaces have ranked as the most popular space amongst residential architects over the past seven years. 47% 26% Outdoor Blended Outbuildings Exterior Living Indoor/ (e.g. Security Space Outdoor barns, Space Lighting sheds) 18% THE AZEK. COMPANY Pools Outdoor Living spaces increased to 74% in the 2021 AIA Survey, from 53% in 2020 THE BROADER OUTDOOR LIVING MARKET IS POISED TO BENEFIT FROM AN INCREASED FOCUS ON THE HOME AND SUBURBAN LIVING, REPRESENTING AN ~$20 BILLION OPPORTUNITY DECKS PERGOLAS OUTDOOR KITCHENS INDOOR/OUTDOOR ¹ Total U.S. market sales of wood and wood-look siding, pavers, outdoor furniture and outdoor lighting were $11 billion in 2018 according to Freedonia, and, when combined with the total U.S. market sales of deck, rail and trim according to Principia in 2021, represent an approximately $20 billion market. 2 The American Institute of Architects (AIA) Q2 2021 Home Design Trends Survey; % of firms reporting "increasing" minus % reporting "decreasing" 23#24A BRANDED CATEGORY LEADER LEADING POSITIONS IN DECKING AND EXTERIORS MARKETS-BOTH TRANSITIONING AWAY FROM TRADITIONAL WOOD MATERIALS 5.8 Trex 5.8 AZEK Exteriors 2019 Remodeling Brand Use Report - Highest Overall Quality 5.8 TimberTech 5.5 5.7 James Hardie DECKING TimberTech 5.3 AZEK EXTERIOR TRIM 2019 Remodeling Brand Use Report - Highest Overall Quality Company D 5.1 Company A THE AZEK. COMPANY 5.3 5.0 Company E Company B 5.3 Company B 4.8 Company C 5.3 Company F remodeling BRAND Also ranked #1 for brand used most and brand familiarity. 2019 LEADER O O RECENT AWARDS & RECOGNITIONS 2021 HBSDealer Golden Hammer Awards - TimberTech Landmark Collection and AZEK Shingle Siding with PaintPro 2021 World Changing Ideas - Fast Company 2021 Builder Brand Use Study - Builder Magazine o TimberTech Decking ranked #1 in overall quality 2021 Green Innovation of the Year - Green Builder Media 2020 Vinyl Recycling Award - Vinyl Sustainability Council 2020 Builder Brand Use Study: o TimberTech Decking ranked #2 in brand familiarity o AZEK Trim ranked #1 in overall quality, brands used in the past 2 years & brands used the most TOP 100 PRODUCTS 2020 meld LMC: AZEK Shingle Siding with PaintProTM Technology Named a Best New Product of 2021 at LMC Annual Meeting PAST COMPANY WORLD CHANGING IDEAS 2021 8/47 SER Houzz: TimberTech won Houzz's Best of Design for four years in a row (2017-2020) Best of h houzz 2020 DESIGN BUILDER BRAND USE STUDY 2021 GREEN BUILDER Sustainability Awards 2021 GREEN INNOVATIONS OF THE YEAR Pro Remodeler: Top 100 Products for 2020 / Decks and Porches (August 2020) - AZEK Vintage Decking Collection Sources: REMODELING Magazine and BUILDER Magazine are owned by Zonda, formerly Hanley Wood (categories ranked include Decking: Composite/PVC and Exterior: Decorative Mouldings/Trim/Columns); Fast Company, Green Builder Media, Houzz, Pro Remodeler and Dwell. Note: Quality Ratings in above bar charts are based on a 7-point scale, with 7 representing the highest brand quality. 24#25BROAD & DIFFERENTIATED DECKING PORTFOLIO BROAD AND BALANCED APPROACH ACCELERATES MATERIAL CONVERSION ACROSS A WIDE RANGE OF PRICE SEGMENTS TimberTechⓇ AZEK Capped Polymer Decking TimberTech PRO 4-Sided Capped Composite Decking TimberTech®Ⓡ EDGE 3-Sided Capped Composite Decking o Unique & proprietary capped polymer technology leads to a cooler, lighter board o 50-Year Fade & Stain / Limited Lifetime Product Warranty o 4-Sided Capped Composite Decking o Full Board Profile o 30-Year Fade & Stain / 30-Year Limited Lifetime Product Warranty o 3-Sided Capped Composite Decking o Scalloped Board Profile o 25-Year Limited Fade & Stain / 25-Year Limited Lifetime Product Warranty THE AZEK COMPANY Mahogany Antique Leather Coconut Husk GOOD Prime $ BETTER Terrain $-$$ Prime+ $-$$ Harvest $$ Reserve $$ BEST Landmark $$$ Legacy $$$ PREMIUM Vintage $$$$ 2019 product launches 2020 product launches 2021 product launches Source: Company data. 25#26COMPREHENSIVE & COMPLEMENTARY EXTERIORS PORTFOLIO A MARKET LEADER IN EXTERIORS OFFERING A FULL LINE OF TRIM AND MOULDING, VALUE-ADDED AND PAINTABLE SOLUTIONS rezer EXTERIORS PORTFOLIO OVERVIEW CORE PRODUCTS TRIM BOARDS & SHEETS 3073 MOULDINGS ACCENT PRODUCTS BEAD BOARD & SHIPLAP SIDING SHINGLES, CLADDING ACCESSORIES - CORTEX & ADHESIVES THE AZEK COMPANY AZEK FUNCTIONAL VALUE-ADDED PRODUCTS CORNER BOARD COLUMN WRAP J-CHANNEL FABRICATED PRODUCTS ¹ GATE / FENCE PERGOLA BROAD PORTFOLIO THAT ENHANCES CURB APPEAL, CONTRACTOR PRODUCTIVITY AND WOOD CONVERSION FLOWER BOX ¹ AZEK does not sell fabricated products but sells directly to the original equipment manufacturers who fabricate these products. 26#27COMMERCIAL PRODUCTS OVERVIEW DELIVERING INNOVATIVE, LOW-MAINTENANCE AND SUSTAINABLE PRODUCTS TO COMMERCIAL AND INDUSTRIAL CUSTOMERS Vertically integrated supplier of low-maintenance bathroom partitions, privacy and storage solutions ARIA PARTITIONS SCRANTON PRODUCTS. Partitions offering extreme privacy and innovative design LOCKERS TUFFTEC Lockers engineered for strength and durability O Primary customers include schools, parks, recreational facilities, stadium arenas, industrial plants, retail and commercial facilities. Sold through both direct and indirect salesforces, covering approximately 900 dealers across North and South America. SHARED MATERIAL CONVERSION OBJECTIVES THE AZEK COMPANY VYCOM Manufacturer of highly engineered plastic sheet products for diverse markets and applications COMMON R&D PLATFORM TIMBERLINE Outdoor Living CELTEC Signage / Display SEABOARP Marine FLAMETEC Industrial / Semiconducto r Broad range of industrial end users including the marine, graphic display, recreation, outdoor living, semiconductor and chemical industries Sold to approximately 200 engineered polymer distributors and direct customers at locations throughout the U.S. and Canada EXPANDS OUTDOOR LIVING MARKET ACCESS 27#28RECYCLING UNLOCKS COST SAVINGS & MARGIN EXPANSION AND ADVANCES OUR ESG GOAL TO USE 1 BILLION POUNDS OF RECYCLED MATERIAL ANNUALLY BY THE END OF 2026 Path to ONE BILLION POUNDS OF RECYCLE Optimize formulations and source lower cost materials (e.g., LDPE) 2020+ Cost Reduce Formulations AZEK FULL-CIRCLE PVC RECYCLING AZEK'S RECYCLING Launched first of its kind PVC scrap recycling program JOURNEY 2018 Enable Recycling Capability ☆s POLYMERS POLYMER PROCESS & RECOVERY 2019+ In-House / Vertical Integration Acquired leading PVC recycler THE AZEK. COMPANY Developed initial recycle formulation; Upgraded manufacturing lines Opened In-house Polyethene Recycling Facility From otherwise landfill- bound waste In-house Polyethylene (PE) Recycling Facility, Wilmington, OH In-house Return Polymers PVC Recycling Facility, Ashland, OH To beautiful, low-maintenance and sustainable decking Timberlech PRO TimberTech AZEK> ~80% recycled content ~50% recycled content OUR DECKING IS RECYCLABLE AT THE END OF ITS USEFUL LIFE 28#29AZEK COMPANY THE APPENDIX Ⓡ FINANCIAL SUPPLEMEN 1141 IN! XXXXXXX IT HONDI VEHAN www prz#30STRONG SALES PERFORMANCE TRENDS NET SALES & GROWTH Strong momentum in the business pre- pandemic; continued strength in Residential segment through Q3 2021. 13.0% 14.2% '15-'20 CAGR (YOY Growth) 13.4% $ in millions (0.4%) Residential Commercial % Growth DR&A¹ Exteriors ¹ Total Residential Total Commercial $633 $131 $502 2017 THE AZEK. COMPANY 7.8% $682 $140 $542 2018 7.6% 9.1% 7.9% 7.1% 16.5% $794 $139 $655 2019 9.4% 60.3% 20.9% (0.8%) 13.2% $899 $128 $771 2020 20.6% 10.8% 17.7% (7.7%) 28.9% $1,097 $125 $972 LTM 6/30/21 Market Growth I $635 $97 $538 YTD Q3 2020 SALES GROWTH EQUATION Growth Initiatives Conversion & Outdoor Living 31.1% $833 $94 $739 YTD Q3 2021 Long-Term Sales Growth Target Source: Company financials. Note: FY ended September. ¹ Decking, Rail, and Accessories and Exteriors metrics represent net product sales growth including acquisitions of Ultralox (closed December 2017) and Versatex (closed June 2018). 30#31ATTRACTIVE AND IMPROVING PROFITABILITY ADJUSTED GROSS PROFIT AND MARGIN $ in millions $225 35.5% 2017 $254 37.3% 2018 $315 $359 2019 39.6% 39.9% 39.5% 2020 $434 LTM 6/30/21 $253 39.8% THE AZEK. COMPANY YTD Q3 2020 $328 39.3% YTD Q3 2021 o Recent investments in recycling and manufacturing productivity initiatives delivering results o Multiple levers to drive margin expansion including recycling initiatives and continuous improvement ADJUSTED EBITDA AND MARGIN $ in millions $131 20.7% 2017 $150 22.0% 2018 $180 22.6% 2019 $214 23.7% 2020 $259 23.6% LTM 6/30/21 $147 23.2% YTD Q3 2020 High confidence in long-term margin opportunity given high variable cost structure and modular capacity deployment $193 23.1% YTD Q3 2021 > $50 million increase in SG&A expense investments since 2017 o Highly variable cost structure Source: Company financials. Note: FY ended September. Refer to Appendix pages 34 to 36 for reconciliations for Adjusted Gross Profit and Adjusted EBITDA. 31#32DISCIPLINED APPROACH TO CAPITAL DEPLOYMENT STRONG CASH FLOWS AND MODEST LEVERAGE PROVIDE FLEXIBILITY TO SUPPORT ORGANIC GROWTH AND STRATEGIC M&A CAPITAL ALLOCATION PRIORITIES o Invest to support the business o Organic growth, operational and recycling investments o Strategic M&A o Product adjacencies, new technologies / manufacturing capabilities, vertical integration, leverage material science expertise o Debt repayment o Target net leverage in the ~2.5x Adj. EBITDA range NET LEVERAGE SUMMARY - LTM 6/30/21 ($ in millions) Cash and Cash Equivalents Revolving Credit Facility First Lien Term Loan Total Debt Net Debt LTM Q3 20 21 Adj. EBITDA Total Leverage Net Leverage $220 468 $468 247 $259 1.8x 1.0 x THE AZEK COMPANY STRATEGIC CAPACITY INVESTMENTS O Multi-phase capacity expansion program across Residential segment that is modular, flexible and supportive of long-term margin objectives O O Phase I &Phase II complete, adding cumulatively 40% new capacity across Wilmington, OH and Scranton, PA facilities Previously announced upsized program by ~$50M - $60M for the remainder of fiscal 2021 expected to add an incremental 15% decking capacity and expand our recycling capacity in early 2022 New facility announced in Boise, ID; expected to be online in '22; adds 30% more decking capacity (Phase III) Once complete, program expected to yield ~85% incremental Decking production as well as increases in Railing, Exteriors and recycling capacity in fiscal 2022 las Example New Production Lines - Wilmington, OH Source: Company financials. Note: Refer to Appendix for reconciliations for total debt, net debt and net leverage. 32#33SUMMARY FINANCIAL HISTORY Fiscal year ending September 30 ($ in millions, excluding EPS) Residential Commercial N et sales Adjusted Gross Profit Adjusted Gross Profit Margin Adjusted SG & A % of Net sales Adjusted EBITDA Adjusted EBITDA Margin Segment Adjusted EBITDA Residential Commercial Adjusted Net Income Adjusted Diluted EPS Operating cash flow Capital expenditures Net leverage ratio Adjusted RON TA $ $ 20 17 FY 502.1 130.6 632.6 224.5 35.5% 93.3 14.7% 13 1.3 20.7% 147.3 16.1 $ 24.2 $ $ 0.22 $ $ (22.5) $ $ 57.4 $ 6.2x $ 54 1.9 139.9 $ 681.8 THE AZEK COMPANY FY $ 2018 254.1 37.3% 10 4.0 15.3% 150.1 22.0% 168.4 21.7 39.2 0.36 67.3 (42.8) Twelve M onths Ended September 30, 20 19 YOY % 7.0 x YOY % $655.4 138.8 7.8% $ 794.2 7.9% 7.1% 13.2% 11.5% 14.3% 14.3% 34.2% $ FY $ $ 314.9 39.6% 135.3 17.0% 179.6 22.6% 62.3% $ 46.7 188.7 21.5 0.43 94.9 $ (63.0) 5.7x 20.9% (0.8%) 16.5% 23.9% 30.1% 19.7% $ 12.1% (0.8%) 18.9% $ 771.2 128.1 899.3 $ FY $ 20 20 $ 359.1 39.9% 145.6 16.2% $ 72.6 213.5 23.7% 238.1 15.1 0.59 98.4 (95.6) 1.2x YOY % 17.7% (7.7%) 13.2% 14.0% 7.6% 18.9% 26.1% (30.0%) 55.5% 20 21 LTM Q3 971.7 125.1 1,096.8 433.5 39.5% 174.8 15.9% 258.7 23.6% 297.0 17.2 314.2 $ 205.8 $ (156.9) 1.0 x YoY% N/M 35.4% (6.2%) 28.9% 27.5% 24.9% 29.4% 36.3% (6.1%) 20 20 YTD Q3 $ 538.5 96.8 635.3 N ine M onths Ended June 30, 20 21 $ $ 147.4 23.2% $ 253.0 39.8% $ 105.6 16.6% $ 28.3 164.0 11.2 0.25 (54.8) YTD Q 3 N/M $ $ $ $ 11.3 $ $ $ 739.0 93.8 832.9 327.6 39.3% 134.9 16.2% 19 2.7 23.1% 223.0 13.3 10 2.8 0.66 118.7 (116.0) N/M YOY % 37.2% (3.1%) 3 1.1% 29.5% 27.7% 30.7% 35.9% 19.0% 44.3% 40.1% N/M N/M 40.6% 4 1.3% Notes: Adjusted RONTA is calculated as Adj. EBITA / Net Tangible Assets, where Net Tangible Assets are calculated as Trade Receivables, net + Inventories + PP&E, net - Accounts Payable; Numbers may not sum due to rounding. 263.3% 33#34NON-GAAP RECONCILIATIONS ADJUSTED GROSS PROFIT RECONCILIATION Fiscal year ending September 30 ($ in millions) Gross Profit Depreciation Amortization Business transformation costs!" Acquisition costs(²) Other cost (³) Adjusted Gross Profit Adjusted Gross Profit Margin Notes: 1. 2. 3. $ $ 20 17 FY 169.0 27.2 26.7 1.6 $ 224.5 $ 35.5% Twelve M onths Ended September 30, 20 19 20 20 FY FY 2018 FY 202.0 23.0 26.6 2.4 254.1 37.3% $ $ 253.2 28.9 27.5 5.3 314.9 39.6% $ $ THE AZEK. COMPANY 296.1 37.6 24.7 0.7 0.1 359.1 39.9% $ 20 21 LTM Q3 368.0 43.0 22.6 433.6 39.5% N ine M onths Ended June 30, $ 20 20 YTD Q3 20 5.8 27.9 18.6 0.7 0.1 $ 20 21 YTD Q3 253.0 $ 39.8% 277.7 33.3 16.5 327.6 39.3% Business transformation costs reflect startup costs of our new recycling facility of $5.3 million for fiscal 2019 and other integration- related expenses in fiscal 2017. Acquisition costs reflect inventory step-up adjustments related to recording the inventory of acquired businesses at fair value on the date of acquisition. Other costs includes reduction in workforce costs of $0.1 million for both fiscal 2020 and the nine months ended June 30, 2020. ADJUSTED SG&A RECONCILIATION Fiscal year ending September 30 ($ in millions) SG&A Depreciation Amortization Share-based compensation costs Asset impairment costs" Business transformation costs¹²) Capital structure transaction costs(³) Acquisition costs¹4) Non-recurring initial public offering and secondary offering costs Other costs) Loss on disposal of PP& E Adjusted SG & A Notes: 1. 2. 3. 4. 5. $ 2017 FY 147.0 2.8 20.9 1.5 1.0 7.0 0.3 20.3 2018 FY $ 144.7 3.3 24.8 3.1 0.1 5.8 0.4 0.8 0.8 1.7 $ 93.3 $ 10 4.0 Twelve M onths Ended, $ $ 20 19 FY 183.6 4.8 32.8 3.7 11.3 - 4.1 (6.8) (1.5) 135.3 $ 20 20 FY 308.3 7.1 30.4 120.5 0.6 0.9 4.1 (0.9) 145.6 20 21 LTM Q3 $ 333.1 5.6 28.6 119.9 0.2 - 0.1 5.0 (1.1) 174.8 N ine Months Ended June 30, 20 21 YTD Q3 $ $ 20 20 YTD Q 3 158.3 5.7 23.0 20.2 - 0.4 - 0.8 3.0 (0.4) 10 5.6 $ 18 3.2 4.3 21.2 19.6 3.9 (0.6) $ 134.9 Asset impairment costs reflect tangible and intangible asset impairment costs of $1.0 million for fiscal 2017. Business transformation costs reflect consulting and other costs related to the transformation of the senior management team of $0.4 million in the nine months ended June 30, 2020. Business transformation costs reflect consulting costs related to repositioning of brands of $4.3 million and $2.0 million in fiscal 2019 and 2017, respectively, compensation costs related to the transformation of the senior management team of $0.6 million, $2.3 million, $0.2 million and $4.3 million in fiscal 2020, 2019, 2018 and 2017, respectively, costs related to the relocation of corporate headquarters of $2.0 million in fiscal 2019, and other integration-related costs of $2.7 million, $5.6 million and $0.7 million in fiscal 2019, 2018 and 2017, respectively. Business transformation costs reflect compensation costs related to the transformation of the senior management team of $0.2 million for the twelve months ended June 30, 2021. Capital structure transaction costs reflect non-capitalizable debt and equity issuance costs. Acquisition costs reflect costs directly related to completed acquisitions $0.8 million in the nine months ended June 30, 2020. Acquisition costs reflect costs directly related to completed acquisitions of $0.9 million, $4.1 million, $0.8 million and $0.1 million in fiscal 2020, 2019, 2018 and the twelve months ended June 30, 2021, respectively. Other costs include costs for legal expense of $1.8 million and $0.4 million for the nine months ended June 30, 2021 and June 30, 2020, respectively, and costs related to an incentive plan and other ancillary expenses associated with the initial public offering of $2.1 million and $2.2 million for the nine months ended June 30, 2021 and June 30, 2020, respectively. Other costs reflect costs for legal defense of $0.9 million, $0.9 million, $1.5 million and $5.2 million in fiscal 2020, 2019, 2018 and 2017, respectively, reduction in workforce of $0.3 million in fiscal 2020, insurance reimbursement of ($7.7) million in fiscal 2019, and costs related to an incentive plan associated with the initial public offering of $2.9 million in fiscal 2020, settlement costs of $15.0 million in fiscal 2017, respectively, and other miscellaneous adjustments of $0.2 million and $0.1 million in fiscal 2018 and 2017, respectively. Other costs for the twelve months ended June 30, 2021 reflect costs for legal expenses of $2.3 million and costs related to an incentive plan and other ancillary expenses associated with the initial public offering of $2.8 million. Source: Company financials. Numbers may not sum due to rounding. 34#35NON-GAAP RECONCILIATIONS ADJUSTED EBITDA RECONCILIATION Fiscal year ending September 30 ($ in millions) Net Income (Loss) Interest expense Depreciation Amortization Tax (benefit)/expense Share-based compensation costs Asset impairment costs" Business transformation cost s¹²) Capital structure transaction cost s(³) Acquisition costs!*) Non-recurring initial public offering and secondary offering costs) Other costs() Adjusted EBITDA Adjusted EBITDA Margin Notes: 1. 2. 3. 4. 5. 6. 20 17 FY $ (67.4) $ 61.6 30.0 47.6 (20.0) 1.5 48.8 8.6 0.3 $ 20.3 13 1.3 20.7% $ 2018 FY 6.7 68.7 26.3 51.4 (23.1) 3.1 0.9 5.8 0.4 7.4 0.8 1.7 150.1 22.0% Twelve M onths Ended, $ $ 20 19 FY (20.2) 83.2 33.7 60.2 (4.0) 3.7 16.6 4.1 9.1 (6.8) 179.6 22.6% $ 20 20 FY (122.2) 71.2 44.6 THE AZEK COMPANY 55.1 (8.3) 120.5 - 0.6 37.6 1.6 8.6 4.2 213.5 23.7% 2021 LTM Q3 $ (9.7) 23.2 48.6 51.2 15.6 119.9 0.2 0.1 0.1 4.5 5.0 258.7 23.6% N ine M onths Ended June 30, $ 20 20 YTD Q3 (57.9) 64.9 33.6 41.6 (4.2) 20.2 0.4 37.5 1.5 6.7 3.0 147.4 23.2% $ 20 21 YTD Q3 $ 54.6 16.9 37.6 37.7 19.7 19.6 2.6 3.9 19 2.7 23.1% Asset impairment costs reflect tangible and intangible asset impairment costs of $0.9 million and $48.8 million for fiscal 2018 and 2017, respectively. The tangible asset impairment costs for fiscal 2017 include the write off of $1.1 million of inventory relating to certain products determined not to be commercially viable. Business transformation costs reflect consulting and other costs related to the transformation of the senior management team of $0.4 million in the nine months ended June 30, 2020. Business transformation costs reflect consulting costs related to repositioning of brands of $4.3 million and $2.0 million in fiscal 2019 and 2017, respectively, compensation costs related to the transformation of the senior management team of $0.6 million, $2.3 million, $0.2 million and $4.3 million in fiscal 2020, 2019, 2018 and 2017, respectively, costs related to the relocation of corporate headquarters of $2.0 million in fiscal 2019, startup costs of the Company's new recycling facility of $5.3 million in fiscal 2019, and other integration-related costs of $2.7 million, $5.6 million and $2.3 million in fiscal 2019, 2018 and 2017, respectively. Business transformation costs reflect compensation costs related to the transformation of the senior management team of $0.2 million for the twelve months ended June 30, 2021. Capital structure transaction costs include loss on extinguishment of debt of $1.9 million for the 2021 Senior Notes and $35.7 million for the 2025 Senior Notes for fiscal 2020 and the nine months ended June 30, 2020, and debt related issuance costs of $0.4 million and $0.3 million for fiscal 2018 and 2017, respectively. Acquisition costs reflect costs directly related to completed acquisitions $0.9 million for the nine months ended June 30, 2020. Acquisition costs reflect costs directly related to completed acquisitions of $0.9 million, $4.1 million, $4.9 million and $0.1 million for fiscal 2020, 2019, 2018 and the twelve months ended June 30, 2021, respectively, and inventory step-up adjustments related to recording the inventory of acquired businesses at fair value on the date of acquisition of $0.1 million, $0.6 million, $0.7 million and $2.4 million for the twelve months ended June 30, 2021, nine months ended June 30, 2020, fiscal 2020 and 2018, respectively. Initial public offering costs includes $1.4 million, $2.3 million and $3.7 million in fees related to the Secondary offering of our Class A common stock for fiscal 2020, the nine months ended June 30, 2021 and the twelve months ended June 30, 2021, respectively. Other costs include costs for legal expense of $1.8 million and $0.4 million for the nine months ended June 30, 2021 and June 30, 2020, respectively, and costs related to an incentive plan and other ancillary expenses associated with the initial public offering of $2.1 million and $2.2 million for the nine months ended June 30, 2021 and June 30, 2020, respectively. Other costs reflect costs for legal expenses of $0.9 million, $0.9 million, $1.5 million and $5.2 million in fiscal 2020, 2019, 2018 and 2017, respectively, reduction in workforce costs of $0.4 million for fiscal 2020, income from an insurance recovery of legal loss of $7.7 million for fiscal 2019, and costs related to an incentive plan associated with the initial public offering of $2.9 million for fiscal 2020, settlement costs of $15.0 million in fiscal 2017, respectively, and other miscellaneous adjustments of $0.2 million and $0.1 million in fiscal 2018 and 2017, respectively. Other costs for the twelve months ended June 30, 2021 reflect costs for legal expenses of $2.3 million and costs related to an incentive plan and other ancillary expenses associated with the initial public offering of $2.8 million. ADJUSTED RONTA RECONCILIATION Fiscal year ending September 30 ($ in millions) Adjusted EBITDA Less: Depreciation Adjusted EBITA Net tangible assets Plus: Trade receivables, net Plus: Inventories Plus: PP&E, net Less: Accounts payable Net tangible assets Adjusted RONTA (Adj EBITA / net tangible assets) Fiscal year ending September 30 ($ in millions) Adjusted EBITDA Long-term debt - less current portion Current Portion Unamortized deferred financing fees U namortized original issue discount Gross debt Cash and cash equivalents N et debt N et Leverage NET LEVERAGE RECONCILIATION $ $ 20 17 FY 13 1.3 893.0 8.3 12.9 1.0 915.1 (10 1.9) 8 13.2 6.2x $ $ $ $ $ 2017 FY 131.3 (30.0) 101.2 41.4 98.9 134.6 (25.8) 249.0 40.6% 20 18 FY 150.1 1,10 8.0 8.3 15.3 1.3 1,132.9 (82.3) 1,0 50.6 7.0 x $ $ $ $ $ Note: Adjusted Return on Net Tangible Assets (RONTA) is calculated as Adj. EBITA / Net Tangible Assets, where Net Tangible Assets are calculated as Trade Receivables, net + Inventories + PP&E, net - Accounts Payable 2018 FY 150.1 (26.3) 123.8 $ Twelve Months Ended, 2019 FY Twelve M onths Ended, 20 19 FY $ 179.6 1,10 3.3 8.3 11.9 44.0 110.9 52.6 115.4 180.8 208.7 (35.9) (47.5) 299.8 $ 329.2 $ 41.3% 44.3% 1.1 1,124.6 (10 5.9) 1,0 18.6 5.7x 179.6 $ (33.7) 145.9 $ $ 20 20 FY 213.5 463.0 $ - 4.2 0.5 467.7 (215.0) 252.6 1.2x 2020 FY 213.5 (44.6) 168.9 70.9 130.1 261.8 (42.1) 420.7 40.1% 20 21 LTM Q3 $ $ 258.7 464.4 2.9 0.3 467.7 (220.5) 247.2 1.0 x $ 258.7 (48.6) 210.1 $ 2021 LTM Q3 $ 90.2 172.8 341.7 (49.7) 554.9 37.9% We have not reconciled Adjusted EBITDA guidance to its most comparable GAAP measure as a result of the uncertainty regarding, and the potential variability of, reconciling items such as the variability in the provision for income taxes, the estimates for warranty and rebate accruals and timing of the gain or loss on disposal of property, plant and equipment. Such reconciling items that impact Adjusted EBITDA have not occurred, are outside of our control or cannot be reasonably predicted. Accordingly, a reconciliation of Adjusted EBITDA to its most comparable GAAP measure is not available without unreasonable effort. However, it is important to note that material changes to these reconciling items could a significant effect on our Adjusted EBITDA guidance and future GAAP results. Source: Company financials. Numbers may not sum due to rounding. 35#36NON-GAAP RECONCILIATIONS ADJUSTED NET INCOME RECONCILIATION Fiscal year ending September 30 ($ in millions) Net Income (Loss) Amortization Share-based compensation costs Asset impairment costs(²) Business transformation costs(³) Capital structure transaction costs) Acquisition costs(³) Non-recurring initial public offering and secondary offering costs) Other costs Tax impact of adjustments) Tax Act remeasurement (9) Adjusted Net Income year ending September 30 $ Other costs Tax impact of adjustments Tax Act remeasurement Adjusted Diluted EPS(¹0) Net Income (Loss) per common share $ Amortization Share-based compensation costs Asset impairment costs Business transformation costs Capital structure transaction costs Acquisition costs Non-recurring initial public offering and secondary offering costs 20 17 FY (67.4) 47.6 1.5 $ 48.8 8.6 0.3 20.3 (35.5) 20 17 FY $ (0.62) 0.44 0.01 0.45 0.08 0.00 20 18 FY 0.19 (0.33) 1.7 (16.4) (22.5) $ 24.2 $ 39.2 $ 6.7 51.4 $ 3.1 0.22 $ 0.9 5.8 0.4 7.4 0.8 ADJUSTED DILUTED EPS RECONCILIATION Twelve M onths Ended, 20 19 FY 20 18 FY 0.06 0.47 0.03 0.01 0.05 $ 0.07 0.01 0.02 (0.15) (0.21) 0.36 $ (20.2) 60.2 3.7 $ 16.6 THE AZEK COMPANY 4.1 9.1 (6.8) (20.0) 46.7 $ Twelve M onths Ended, 20 19 FY (0.19) 0.56 0.04 0.15 $ 0.04 0.08 (0.06) (0.19) $ 20 20 FY 0.43 $ (122.2) 55.1 120.5 0.6 37.6 1.6 8.6 4.2 (33.3) 72.6 20 20 FY (1.00) 0.45 0.99 0.31 0.01 0.07 0.03 (0.27) 0.59 $ 2021 LTM Q3 $ (9.7) 51.2 117.2 $ 0.2 0.1 0.1 4.5 5.1 (21.4) 147.3 20 20 YTD Q3 (0.51) 0.37 0.18 0.33 0.01 0.06 0.03 (0.22) N ine M onths Ended June 30, 20 21 YTD Q 3 N ine M onths Ended June 30, 2021 YTD Q3 0.25 $ $ 20 20 YTD Q3 $ (57.9) 41.6 20.2 0.4 37.5 1.5 6.7 3.0 (24.8) 0.35 0.23 0.11 28.3 $ 10 2.8 0.02 0.03 (0.08) $ 0.66 54.6 37.7 16.9 2.6 3.9 (12.9) Notes: 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Effective as of September 30, 2020, we revised the definition of Adjusted Net Income to remove depreciation expense from the calculation. The prior periods have been recast to reflect the change. Asset impairment costs reflect tangible and intangible asset impairment costs of $0.9 million and $48.8 million in fiscal 2018 and 2017. The tangible asset impairment costs for fiscal 2017 include the write off of $1.1 million of inventory relating to certain products determined not to be commercially viable. Business transformation costs reflect consulting and other costs related to the transformation of the senior management team of $0.4 million in the nine months ended June 30, 2020. Business transformation costs reflect consulting costs related to repositioning of our brands of $4.3 million and $2.0 million in fiscal 2019 and 2017, respectively, compensation costs related to the transformation of the senior management team of $0.6 million, $2.3 million, $0.2 million and $4.3 million in fiscal 2020, 2019, 2018 and 2017, respectively, costs related to the relocation of our corporate headquarters of $2.0 million in fiscal 2019, startup costs of our new recycling facility of $5.3 million in fiscal 2019, and other integration-related costs of $2.7 million, $5.6 million and $2.3 million in fiscal 2019, 2018 and 2017, respectively. Business transformation costs reflect compensation costs related to the transformation of the senior management team of $0.2 million for the twelve months ended June 30, 2021 Capital structure transaction costs include loss on extinguishment of debt of $1.9 million for the 2021 Senior Notes and $35.7 million for the 2025 Senior Notes for fiscal 2020, and debt related issuance costs of $0.4 million and $0.3 million for fiscal 2018 and 2017, respectively. Acquisition costs reflect costs directly related to completed acquisitions $0.9 million for the nine months ended June 30, 2020. Acquisition costs reflect costs directly related to completed acquisitions of $0.9 million, $4.1 million, $4.9 million and $0.1 million for fiscal 2020, 2019, 2018 and the twelve months ended June 30, 2021, respectively, and inventory step-up adjustments related to recording the inventory of acquired businesses at fair value on the date of acquisition $0.6 million, $0.7 million and $2.4 million for the nine months ended June 30, 2020, fiscal 2020 and 2018, respectively. Initial public offering costs includes $1.4 million and $2.6 million in fees related to the Secondary offering of our Class A common stock for fiscal 2020 and the twelve months ended June 30, 2021, respectively. Other costs include costs for legal expense of $1.8 million and $0.4 million for the nine months ended June 30, 2021 and June 30, 2020, respectively, and costs related to an incentive plan and other ancillary expenses associated with the initial public offering of $2.1 million and $2.2 million for the nine months ended June 30, 2021 and June 30, 2020, respectively. Other costs reflect costs for legal expenses of $0.9 million, $0.9 million, $1.5 million and $5.2 million in fiscal 2020, 2019, 2018 and 2017, respectively, reduction in workforce costs of $0.4 million for fiscal 2020, income from an insurance recovery of legal loss of $7.7 million for fiscal 2019, and costs related to an incentive plan associated with the initial public offering of $2.9 million for fiscal 2020, settlement costs of $15.0 million in fiscal 2017, respectively, and other miscellaneous adjustments of $0.2 million and $0.1 million in fiscal 2018 and 2017, respectively. Other costs for the twelve months ended June 30, 2021 reflect costs for legal expenses of $2.3 million and costs related to an incentive plan and other ancillary expenses associated with the initial public offering of $2.8 million. Tax impact of adjustments is based on applying a combined U.S. federal and state statutory tax rate of 24.5% for both nine months ended June 30, 2020 and 2021. Tax impact of adjustments is based on applying a combined U.S. federal and state statutory tax rate of 24.5%, 24%, 24% and 38% for fiscal 2020, 2019, 2018 and 2017, respectively, except that a tax rate of 0% was applied to the adjustments for certain non-deductible share-based compensation costs and for goodwill impairment in fiscal 2017 as those items did not give rise to income tax deductions. Tax Act remeasurement is one-time tax benefit of $22.5 million as a result of the remeasurement of certain deferred taxes due to the enactment of the Tax Act. Weighted average common shares outstanding used in computing diluted net income (loss) per common share of 156,658,640 and 113,635,347 for the nine months ended June 30, 2021 and 2020, respectively. Weighted average common shares outstanding used in computing diluted net income (loss) per common share is 122,128,515 shares for fiscal 2020, and 108,162,741 shares for fiscal 2019, 2018 and 2017. Source: Company financials. Numbers may not sum due to rounding. 36#37AZEK COMPANY THE Investor Relations Contact: 312-809-1093 [email protected] NYSE: AZEK Ⓡ TimberTech® AZEK Exteriors VERSATEX. ULTRALOX INTERLOCKING TECHNOLOGY VYCOM SCRANTON PRODUCTS RETURN POLYMERS