Foam Roof Bubbles

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

Foam roof bubbles.

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. It is an insulator not a waterproofing system. The second layer wouldn t stick to the first so the bubble forms when the two separate and air gets between them. Chas the owner of the non gone able roofing once told me that foam bubbles are sometimes caused when the foam got applied in two thin layers.

The top coat is an acrylic or an acrylic with granules imbedded in the coating. Does anyone know if this recoating work must be done by the professionals or it is a diy work. A roof blister is a raised area where there is a loss of adhesion of the roof. Although this is more common on flat roofs shingle bubbles can occur in pitched roofs as well.

In the top 10 foam roofing myths section it mentioned to maintain a foam roof we may need to periodically adding re coats to protect the roof from prolonged uv exposure. This is a quick video showing you how do repair the foam bubbles and blisters on your flat roof. Water buildup combined with heat from the sun can cause shingles to blister and bubble. Bubbles across your foam roof will look like small or large rounded domes that stick up from the surface.

Foam roofs are made from spray foam polyurethane by mixing two different materials together.