October 2, 2025

Dirt-floor crawl spaces require a vapor barrier before insulation. Rigid foam is the most reliable option for moisture resistance and cost-effectiveness. Spray foam delivers the best seal but is expensive and professional-only. Fiberglass is budget-friendly but prone to mold and pests. Insulating crawl space walls is often more effective than insulating the floor. When your […]

Crawl space insulation improves comfort, lowers energy bills, prevents moisture damage, and protects plumbing.  A vapor barrier is essential for dirt-floor crawl spaces to block ground moisture before adding insulation.  Rigid foam and spray foam provide the best long-term results, while fiberglass is a cheaper DIY option better suited to dry climates.  Vented crawl spaces