DOW Great Stuff PRO Polyurethane Gaps AND Cracks GUN Foam Filler 750ml Buff 2940221

This builders’ foam filler is supplied in a 750ml gun-grade canister for sealing and insulating gaps, cracks, and joints during construction. The expanding polyurethane foam is dispensed using an applicator gun, providing control and accuracy when working in confined or awkward spaces.

Typically used on site for filling voids around pipe entries, window and door frames, or service penetrations, it helps reduce air and moisture ingress and improve thermal performance. Once cured, it can be trimmed, sanded, plastered, or painted to achieve the required finish for follow-on trades.