SIP Dimensional Lumber Spline
Typical Detail
This detail shows a wall-to-wall vertical SIP connection using a block spline and specifies nail size, nail spacing, use of sealant, and an 1/8” expansion gap in 2D CAD format. Developed by APA – The Engineered Wood Association, this detail is drawn from APA publication Product Guide: Structural Insulated Panels, Form H650 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.
