FBC2023R905.1.1.1

Underlayment for asphalt shingles, metal roof panels or shingles, mineral surfaced roll roofing, slate and slate-type shingles, wood shakes and wood shingles.

Original source

Plain-English Explanation

Section R905.1.1.1 covers underlayment for asphalt shingles, metal roof panels or shingles, mineral surfaced roll roofing, slate and slate-type shingles, wood shakes and wood shingles.. This requirement ensures your roof assembly is installed correctly and meets minimum performance standards for your jurisdiction. Verify specific requirements with your local building department.

For the Contractor

Per IRC R905.1.1.1 (Underlayment for asphalt shingles, metal roof panels or shingles, mineral surfaced roll roofing, slate and slate-type shingles, wood shakes and wood shingles.): follow manufacturer installation instructions and verify compliance with local amendments. Document installation with photos for inspection readiness.