Soudal Soudafoam Fire Rated Foam has a fire rating of up to 240 minutes*. It creates an efficient seal against smoke and gas, excellent adhesion to many building materials, acoustic rating 62dB, high bond strength, very good filling characteristics, excellent stability, non-shrink and limited post expansion. Can be painted after full cure. It contains propellants that are completely harmless to the ozone layer. Fitted with a patented Click & Fix adaptor for use only with the Gorilla Foam Gun Click & Fix (20106).