IRC2018R904.3

Material specifications and physical characteristics.

Original source

Plain-English Explanation

Section R904.3 covers material specifications and physical characteristics.. 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 R904.3 (Material specifications and physical characteristics.): follow manufacturer installation instructions and verify compliance with local amendments. Document installation with photos for inspection readiness.