This water resistant expanding foam from Polycell has been specially designed for filling sealing and insulating most building materials around the interior and exterior of your home. Simply apply and leave for 20 minutes to dry. It comes in an easily storable and transportable aerosol 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.
