For filling of cavities, sealing of openings in roof construction, creation of a soundproof screen, connecting of insulating materials and roof construction, application of a soundproofing layer on motors, improving thermal isolation in cooling systems and installation of air conditioners. permanent color. paintable. mildew resistant. will expand up to 3x its original size during curing, therefore it is mostly being used for filling larger gaps and cracks or cavities that are difficult to reach.