shingle substrate deflection limits

Bison Panel vs. BWP Marine Plywood: Selecting and Fastening Decking Substrates for Sloped Roofs

• September 18, 2026
• admin

When designing a sloped architectural shingle roof, attention naturally focuses on the visible exterior: the shingle profile, color blend, and wind rating. Yet in structural forensics, premature shingle failure—such as tab buckling, fastener pull-out, or wavy rooflines—rarely originates in the shingle itself. Most often, the failure stems from an improper or incorrectly installed structural substrate: …