IRC2018R904.2

Compatibility of materials.

Original source

Plain-English Explanation

Section R904.2 covers compatibility of materials.. 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 R904.2 (Compatibility of materials.): follow manufacturer installation instructions and verify compliance with local amendments. Document installation with photos for inspection readiness.