APA Rated Siding Panels Over Rigid Foam Insulation Sheathing
Technical Note
This technical publication addresses a critical challenge in modern building design: achieving superior energy efficiency while maintaining structural integrity and controlling construction costs. It demonstrates how APA Sturd-I-Wall construction using rated siding panels over rigid foam insulation sheathing can deliver exceptional thermal performance (U-values as low as 0.05, equivalent to R-20) with conventional 2x4 framing, significantly reducing heating and cooling costs.
This publication is designed for: architects, engineers, builders, designers
The publication provides comprehensive technical specifications, installation recommendations, and performance data. It includes detailed guidance on proper nail sizing, spacing requirements, vapor barrier considerations, and fire protection measures.
Key sections include:
Installation recommendations - specifications for panel thickness, stud spacing, and nailing requirements
Special precautions when using foam sheathing - vapor barrier and fire protection considerations
Wall racking tests - structural performance validation data
Insulation values - thermal resistance calculations and construction options
Published by APA — The Engineered Wood Association.
