Rubber Roof Blistering

This area can fill up with air or water to form a blister which looks like a bubble on your roof.

Rubber roof blistering.

These can be caused by a variety of issues which are all avoidable if the roof design is correct and the membrane is correctly installed. Bonding adhesives are used to attach epdm membranes to upstands and around the roof perimeter. As the sun heats the roof those pockets expand and stretch the membrane. The bubbles are trapped air or moisture.

One problem you might come across is bubbles or blistering in your epdm roof. All conventional low slope roof systems experience blisters in some form. A roof blister is a raised area where there is a loss of adhesion of the roof. Blisters can trap moisture and draw in more even when it doesn t rain.

In severe cases the membrane will actually crack when the pressure becomes too great. Heng s fibered roof coating is not suitable for rubber roofs or homes with asphalt roofing. Items you will need putty knife rv sealant drill bit to match existing screws. If left untreated a blister can grow larger and allow more moisture to get in so that the problem gets worse until more extensive repairs and possible replacement is necessary unless it pops.

Workers should always inspect the surrounding areas for tears punctures or any other anomalies that could let in water. Fixing bubbles and blisters in an epdm roof. To permanently repair blisters it s necessary to cut away the blistered area down to the insulation. Stop the problem at the source.

Vapour from bonding adhesive. This trapped moisture can either leak into the building or collect inside the roof which can lead to extensive damage. Blistering blisters form when there are pockets of air or moisture trapped between layers of your roof s membrane or between the membrane and the roof deck. It is a non asphalt high quality chemically engineered roof coating that contains long fibers pigments and non drying resins.

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.