Z-Flashing Installation—APA Rated Siding
Typical Detail
This detail shows z-flashing installation at horizontal joint between APA panel siding courses of proper water-resistive barrier overlap, 1/8" gap to prevent wicking, and drainage plane integration at exterior wall studs in 2D CAD format. Developed by APA – The Engineered Wood Association, this detail is drawn from APA publication Build a Better Home: Walls, Form A530 and reflects decades of engineered wood research, testing and field-proven best practices.
This 2D detail is designed for architects, engineers, contractors and building professionals and provides clear, code-compliant guidance.
Available in multiple formats including DWG (AutoCAD), RVT (Revit), and PDF, this detail helps building professionals streamline the design and construction process while ensuring structural integrity and proper installation of engineered wood products.
Published by APA — The Engineered Wood Association.
