Expanding Foam

Expanding Foam Sealants for Insulation and Gap Filling
Expanding Foam is designed for filling, fixing and insulating wood, metal, plastic and masonry. It comes in an easily storable and transportable aerosol can and expands to the exact size of the cavity you need filling. If you're using it during redecoration projects, it's sandable and paintable, making it perfect for giving a smooth, professional finish once dried