Multi purpose PU foam that cures to a durable semi-rigid structure under influence of air humidity. Product can be used for bonding, sealing and filling purposes. Seals joints around windows and doors. Fills large cracks, holes and openings. Insulates hot and cold water pipes. Filled seals provide excellent thermal and acoustical insulation. Once cured, foam can be cut, sanded, plastered and painted. Foam adheres to all surfaces except polyethylene, silicone and polytetrafluorethylene.