Rigid Foam Board vs. Fiberglass Batts in Crawl Spaces
Insulating a crawl space correctly requires understanding how thermal boundaries interact with heavy subterranean humidity. For decades, residential building codes dictated stuffing fiberglass batt insulation up between structural floor joists. Today, modern building science proves that fiberglass in an unconditioned crawl space is one of the leading contributors to wood rot, saggy subfloors, and toxic … Read more