Spray Foam insulation is sprayed into place into a wall or roof cavity by a certified professional. Spray Foam insulation can be sprayed after electrical and plumbing services are in place. It can also be poured into existing walls without removal. Spray foam then expands to up to 100 times its initial volume in seconds, permanently adhering to the surfaces of the surrounding building materials and sealing all gaps, cracks, crevices, and seams creating a completely efficient home or building.