Crawl Space Repair - Spray Foam Insulation in O'Fallon, IL Rim Joist

This rim joist was sealed with spray foam to fill and insulate gaps in the woodwork and various penetration points. Dr. Energy Saver St. Louis uses one and two-part spray foam for many air-sealing tasks. The mixtures sprays on an area as liquid and then rapidly expands to fill and adhere to gaps and cracks. When it cures, the foa creates an airtight barrier that also provides good insulation value.