Construction Performance Guidelines
Article Number
5.18
Condition
ASPHALT ROLL ROOFING IS BLISTERED BUT DOES NOT ADMIT WATER
Acceptable Performance/Condition
Roll roofing may blister under normal weather conditions. Blisters that result in water penetration are not acceptable.
Warranty
One-Year - Work and Materials
Action
Roofing not meeting the acceptable condition shall be repaired.
Remarks
Surface blistering of roll roofing may be caused by solar heating and humidity.