Azek Investor Presentation Deck

AZEK'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

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