Spray foam insulation costs $1.00 to $4.50 per square foot or $1,300 to $4,000 installed. Closed-cell spray foam costs $1.30 to $2.90 per board foot.| HomeGuide
Crawl space repair costs $2,500 – $8,000 for foundation repair, water removal, replacing a support beam. Crawl space cleaning costs $500 – $4,000 for mold removal.| HomeGuide
Crawl space encapsulation costs $1,500 – $15,000. A vapor barrier costs $2 – $4 per square foot. Costs include a drainage system, insulation, repairs, and sealing.| HomeGuide