Soudal beige gap filling expanding foam 500 mlthis 500ml water resistant fast curing gap filling expanding foam from soudal has been specially designed for quick and easy filling of gaps joints holes and pipe penetrations around the interior and exterior of your home simply apply and leave for 1 hours for a bead of 3cm to dry it comes in an easily storable and transportable aerosol and expands to approximately 30 times the size of the can if youre using it during redecoration projects