Polyurethane assembly foam, which hardens with moisture from the air, is intended for the installation of window and door frames, awnings, for filling and sealing openings, joints, cracks, as sound and thermal insulation of roofs, heating systems, installations, when making boats and trailers . Adheres well to all construction materials such as wood, aerated concrete, brick, metal, aluminum, but does not adhere to polyethylene, silicone and Teflon, and is not resistant to UV radiation.