Not more than 25 percent of the total roof area or roof section of any existing building or structure shall be repaired, replaced or recovered in any 12-month period unless the roof covering on the entire existing roof system or roof section is replaced or recovered to conform to the requirements of this code.
Original sourcePlain-English Explanation
Section R908.1.1 covers not more than 25 percent of the total roof area or roof section of any existing building or structure shall be repaired, replaced or recovered in any 12-month period unless the roof covering on the entire existing roof system or roof section is replaced or recovered to conform to the requirements of this code.. 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 R908.1.1 (Not more than 25 percent of the total roof area or roof section of any existing building or structure shall be repaired, replaced or recovered in any 12-month period unless the roof covering on the entire existing roof system or roof section is replaced or recovered to conform to the requirements of this code.): follow manufacturer installation instructions and verify compliance with local amendments. Document installation with photos for inspection readiness.