Foam Roof Bubbles

It is an insulator not a waterproofing system.
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. The top coat is an acrylic or an acrylic with granules imbedded in the coating. Spray foam spf is not a roof. Does anyone know if this recoating work must be done by the professionals or it is a diy work.
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. 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. A roof blister is a raised area where there is a loss of adhesion of the roof. Foam roofs get bubbles and blisters sometimes and need to be repaired.
The second layer wouldn t stick to the first so the bubble forms when the two separate and air gets between them. This is a quick video showing you how do repair the foam bubbles and blisters on your flat roof. Foam roofs are made from spray foam polyurethane by mixing two different materials together. Although this is more common on flat roofs shingle bubbles can occur in pitched roofs as well.
Bubbles across your foam roof will look like small or large rounded domes that stick up from the surface.