Flat Roof Blisters

They appear in all types of roofing systems residential and commercial.
Flat roof blisters. In bituminous systems voids can be created by improper adhesion during application. Causes of blisters all conventional low slope roof systems experience blisters in some form. With weather changes roof blisters may pop up on your commercial flat roof. Roof blisters are not limited to one type of roof system.
Left alone it might take several yeas for the. This flat roofing type is ideal for roofs with high amounts of foot traffic or if the roof is often hit by airborne debris. The blister is in an area that receives foot traffic. To repair a blister cut away the membrane until you reach an area where the membrane still adheres to the roof tightly.
Some are not so bad and others show a roof that needs quite a bit more work. Shown below are a multiple photos of flat roof or cool coated roof blisters. A single blister on a seam. Water somehow got under the roof coating and couldn t get back out.
While roof blisters may not need immediate attention if left unmonitored they could lead to saturated insulation and a damaged membrane. It expanded as vapor and made this blister. The blister is near enough to the seam that it may cause the seam to open up.