Rv Roof Blister Bubble

A roof blister is a raised area where there is a loss of adhesion of the roof.

Rv roof blister bubble.

The most common cause of roof bubbling is poor installation of the roof. The rv manufacturer simply didn t apply the adhesive evenly or left some dirt on the roof that the adhesive couldn t stick to. I had not paid attention before but i have noticed that there are little blister looking and feeling places throughout the roof. Roofs over cathedral ceilings often blister because they are likely poorly vented and collect moisture from the interior.

Whilst bubbles or blisters on a one piece epdm roof can be unsightly they will not cause the rubber membrane to fail. 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. Maybe 25 to 30 total anywhere from dime size to half dollar size. Look for water squishing out of small openings as you walk the roof.

These bubbles of trapped air moisture can be caused by a variety of issues which are all avoidable if the roof design is correct and the membrane is correctly installed. Then i proceeded to put two coats of sealer on the entire roof. This area can fill up with air or water to form a blister which looks like a bubble on your roof. Coatings on older foam roofs that have not been well maintained will result in blistering water intrudes into the foam and can t be seen when recoating.

Vapour from contact bonding adhesive. Causes of blisters all conventional low slope roof systems experience blisters in some form.