The AZEK Soffit System Installation Guide (2024 PDF) provides complete instructions for installing AZEK’s vented and non-vented soffit system, including soffit panels, notched fascia, and frieze boards. This guide outlines the correct way to prepare framing, align rafter tails, fasten soffit components, and achieve clean, well-ventilated eave and rake applications for long-term performance.
AZEK’s soffit system is designed for use with both 12″ and 16″ soffit panel widths. The guide begins with general installation requirements, including ensuring all rafter tails are in the same plane, handling vented panels carefully to protect slats, and using the built-in drip edge provided by AZEK Notched Fascia. Installers will also find guidance for scarf-jointing trim and gluing with AZEK adhesive to reduce movement at joints.
The document walks through the complete eave application process, starting with fitting the soffit panel so that the outside edge projects 7/16″ beyond the subfascia. It details how to secure soffit panels to the underside of the subfascia and frieze board using stainless steel nails or trim screws spaced 12″ on center—or 6″ on center when no fascia/frieze support is present. The guide also shows how to install AZEK Rabbeted Trim as a frieze board and how the plowed pocket accepts 1/2″ soffit panels for a tight, secure fit.
Rake applications are covered with step-by-step instructions for aligning the plowed soffit pocket with the barge rafter and tying soffit components cleanly into angled roof lines. Detailed fastening schedules indicate how many fasteners are required for each soffit width, and installation diagrams illustrate correct panel placement, cutting techniques, airflow direction, and structural alignment.
Additional diagrams provide visual examples of eave installations, rake details, ventilation pathways, fascia connections, and soffit-to-wall intersections—making it easier to follow proper assembly on-site.
Download the full AZEK Soffit System Installation Guide (2024 PDF) below for complete illustrations, fastener spacing requirements, and best-practice instructions. For help selecting AZEK soffit, fascia, or trim for your project, contact your local TimberTown team—we’re always here to help.
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