Repair Foam Roof Blisters

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

Repair foam roof blisters.

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. Spf spray polyurethane foam is a mixture of two liquid compounds isocyanate and polyol which expands to 20 or 30 times larger than its original size by creating bubbles or air pockets. Repair in there is heavy traffic. If repairs are warranted it should be left to the roofing contractor to properly repair them.

Unnecessary repair attempts can result in leaks and premature roof problems. With proper care and repair your foam roof can virtually last forever. Most industry warranties do not cover spf blisters as they generally cover only the water tightness of the polyurethane foam coating. The majority of blisters do not pose a threat to the integrity of the foam roofing system.

The decision to repair unopened blisters has typically been left up to the judgment of the contractor. If the coating is secured over a dirty surface it can pull away from the foam and possibly peel away from the roof. Type a blisters should always be repaired as soon as possible. Moisture trapped in spray down foam due to deterioration or loss of protective coating.

Roof coating blisters in areas of adequate drainage are usually coming from below. This article provides some guidance on whether or not to repair blistered areas on different types of conventional low slope membrane systems. If you currently have a foam roof and you notice protrusions or blisters then you should consider fixing your roof fairly quickly. A roof blister is a raised area where there is a loss of adhesion of the roof.

This also applies to blisters in built in and single ply membrane systems. Unnecessary repair attempts can result in leaks and premature roof problems. It is an insulator not a waterproofing system. Type d typically left in place.

The majority of blisters do not pose a threat to the integrity of the foam roofing system. What to watch for roof coating blisters in ponding water areas are due to moisture permeation from above. Foam roofs take a beating from our phoenix sun. Foam blisters fix it or leave it.

If there is traffic on the roof fix it. Causes of blisters all conventional low slope roof systems experience blisters in some form. Polyurethane foam roofing can sometimes develop blisters the most common cause of which is due to the presence of moisture. The unnecessary repair of blisters in a sprayed polyurethane foam roofing system can lead to leaks and premature roof problems.

Spray foam spf is not a roof. Also the roof will be cleaned thoroughly first. Type c typically left in place.