Case 2
Navigation
- Introduction
- Causes of Defects
- Good Practices
- Standards
- Maintenance and Diagnostics
- Remedial
- Similar Cases
- References
Introduction
Type of Building: Industrial
Blisters are raised surface areas over voids in a roof system that contains entrapped air and/or moisture. As the roof surface temperature rises, the pressure inside the blisters rises and the adhesion of the asphalt weakens. Usually noticeable on hot and sunny days, blisters range from small, spongy spots to large, pronounced areas. Blistering can occur either between membrane and substrate or between membrane piles.