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Insulation Costs

Attic insulation, spray foam, crawl spaces, and weatherstripping — find costs that fit.

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Insulate an Attic

National avg: $2,200 ($1,000–$4,000)
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Install Spray Foam Insulation

National avg: $5,500 ($2,500–$10,000)
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Insulate a Garage

National avg: $1,800 ($800–$3,500)
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Install Weatherstripping

National avg: $300 ($100–$600)
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Insulate a Crawl Space

National avg: $3,500 ($1,500–$7,000)
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Last updated: April 14, 2026