PU foam based on a moisture curing polyurethane pre-polymer. Quick, economic and easy to apply. Improves draught and heat insulation, fills irregular gaps, fixes framework and deadens sound. Can be cut, sawn, plastered and sealed over once cured. Conforms to DIN4102 Class B3 (foam rating for products with no fire resistant additives of properties). Can be used for fitting doors, windows, insulating pipes and filling gaps and can reduce the need for mechanical fixings. Window setting (where a clean and controlled backfill is required) and entrance door linings.