Flat Roof Blisters

Water somehow got under the roof coating and couldn t get back out.

Flat roof blisters.

Causes of blisters all conventional low slope roof systems experience blisters in some form. Blisters can develop from voids which are essentially bubbles caused by uneven bitumen application trapped debris or gases from trapped moisture. Left alone it might take several yeas for the. They appear in all types of roofing systems residential and commercial.

While roof blisters may not need immediate attention if left unmonitored they could lead to saturated insulation and a damaged membrane. Causes of roofing blisters may vary and for arizona residents with flat roofs and annual storms knowing how to fix blisters ways for preventing roof blisters on flat roofing and why roof blisters happen is an important part of regular roof maintenance that keeps their homes protected in this harsh climate. Membrane systems are most susceptible to blistering because blisters are formed by voids between the plies or at the point between the substrate and the membrane. This flat roofing type is ideal for roofs with high amounts of foot traffic or if the roof is often hit by airborne debris.

A single blister on a seam. Shown below are a multiple photos of flat roof or cool coated roof blisters. Some are not so bad and others show a roof that needs quite a bit more work. In bituminous systems voids can be created by improper adhesion during application.

Roof blisters are not limited to one type of roof system. With weather changes roof blisters may pop up on your commercial flat roof. The blister is near enough to the seam that it may cause the seam to open up.