FULLER Great Stuff® Space Filling Foam is a multi-purpose, easy to use expanding foam that will fill cavities ranging in size from small gaps to larger spaces. Great Stuff® is used for sealing around penetrations through walls and floors. It can also be used for filling holes in walls and filling wide gaps and cracks around window frames. Use Great Stuff® to seal against draughts, moisture and noise. Great Stuff® can be used inside and outside and will adhere to a wide range of substrates. Great Stuff® will not shrink when cured and will provide an airtight, moisture resistant seal. Great Stuff® can be cut, sanded, plastered or painted to produce a neat tidy finish.