Wood Structural Panels Used as Nailable Sheathing
Technical Topic
Wood structural panel (WSP) sheathing, such as plywood and oriented strand board (OSB), is often used to sheath the outside surface of exterior walls in both residential and nonresidential construction. This publication contains a practical, step-by-step guide for determining the correct fastener types and nailing schedules when attaching lightweight siding products directly to wood structural panel sheathing, without the need to nail into wall studs.
This publication is designed for: builders, contractors
Key sections include:
Fastener withdrawal load tables for ring-shank nails, wood screws and smooth-shank/vinyl siding nails
Wind suction load requirements
Adjustment factors for mean roof height and wind exposure categories (B, C and D)
Example demonstrating how to determine nail spacing for APA Rated lap siding installed over 7/16-inch OSB in a 120 mph, Exposure C environment
Guidance on determining fastener requirements for siding products and substituting fasteners
Published by APA — The Engineered Wood Association.
