Attic & Crawl Space Insulation in Rapid City, SD

Ice dams form when heat escaping the living space warms the roof deck unevenly, melting snow that refreezes at the colder eaves and backs water up under the shingles. Rapid City's Chinook-driven freeze-thaw cycling makes this worse, not better. Spray foam works here both for its R-value and because it seals the attic-floor air leaks — top plates, wiring penetrations, can lights — that batt and blown-in insulation miss.

Crawl spaces bring cold floors, heat lost from ductwork, and moisture. Closed-cell foam on the rim joist and crawl space walls pulls triple duty — it adds R-value, blocks the air movement, and holds back vapor — so the thermal and moisture sides both get handled in one pass.