B3 All Purpose Fill and Fix Expanding PU Foam

B3 rated PU foam. 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. Available in 500ml and 750ml aerosol cans or 750ml gun grade canister which can be used with a standard gun foam applicator (BDAG1 or BDAK45). Conforms to DIN4102 Class B3. (Foam rating for products with no fire resistant additives of properties.)