Exhibit 99.1 May 8, 2024 The AZEK Company Announces Preliminary Second Quarter and Year-To-Date Fiscal 2024 Results; Raising Fiscal 2024 Outlook Strong Second Quarter Performance Driven by Residential Segment Execution, Increasing Brand Momentum and Realization of Margin Expansion Initiatives Growth Initiatives, including New Product Introductions, Consumer Engagement and Shelf Space Gains in Residential Pro and Retail Channels Driving Sustained Business Growth and Material Conversion PRELIMINARY FINANCIAL ...