Azek IPO Presentation Deck

Large, High Growth Markets Benefiting from Material Conversion Our products are accelerating conversion from traditional materials-substantial runway remaining Decking - $3.18 Decking Market: 4.6% CAGR AZEK Materials Category: 6.9% CAGR Rail-$2.1B Rail Market: 4.5% CAGR AZEK Materials Category: 6.1% CAGR Trim - $2.0B Trim Market: 1.0% CAGR AZEK Materials Category: 2.7% CAGR TRIM PVC 11% +42% Conversion Opportunity RAIL Wood the 476 Composite & Auvinun 14% +67% Conversion Opportunity Other 17% AZEK is in the early innings of long-term material conversion trend THE AZEK COMPANY DECKING Wood Competit +80% Conversion Opportunity 1 Premium hardwood, cedar and redwood comprise 13% of the total decking market Core $7.2 billion market; AZEK product categories growing at "6% (or 1.7x market) driven primarily by conversion Source: Principle Principio's Trim market definition excludes broader applications such as tongue and groove profiles, sheets, sis thresholds and column wraps Note Material shore 's are based on eelume demanded in bilions of Ninear feet Decking, Howl and Trim conversion opportunity is based on volume demanded for wood solutions in billions of near feet. Trim conversion opportunity also includes engineered wood Principle's Trim merket definition excludes brauder applications such as taeque and groove profiles, sheets, als, thresholds and column wraps. Other includes (A) hallow vinyl, plastic lumber and metal for decking, (3)ron, stainless steel, hollow vinyl and other plastic for rolling and (c)engineered wood, fiber cement, vinyl ather polymer composite and other for trim. 1. Decking category includes composite and PVC decking all category includes composite and amnum rail and trim category includes PVC tr 16

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