Expanding Foam Uses and Advantages. Expanding foam will swell to top off gaps and will dry hard. It can be used as insulation and soundproofing and is the most effective way to fill cavities and holes.
Expanding Foam Uses and Advantages. Expanding foam will swell to top off gaps and will dry hard. It can be used as insulation and soundproofing and is the most effective way to fill cavities and holes.