How much does spray foam insulation cost?
Spray foam seals and insulates attics, walls and crawl spaces, cutting energy bills. Cost tracks the area covered, foam type (open- vs. closed-cell) and thickness.
| Typical range | $2,000 – $9,000 |
| Most common | $4,500 |
| Priced | average project |
| DIY-friendly? | No — best left to a licensed pro |
What changes the price of spray foam insulation
- Square footage and thickness
- Open-cell vs. closed-cell foam
- Area — attic, walls, rim joists, crawl space
- Removing old insulation
Estimate your cost
Adjust the quality and scope, or compare with other projects.
Full typical range for this project. Adjust the quality/scope for a tighter estimate. The only way to know your real price is to get quotes from local contractors.
- ›Square footage and thickness
- ›Open-cell vs. closed-cell foam
- ›Area — attic, walls, rim joists, crawl space
- ›Removing old insulation
National ballpark ranges for the US. Not a quote — actual prices vary by region, home and contractor.
Spray foam insulation cost — frequently asked questions
How much does spray foam insulation cost?
Spray foam insulation runs about $2,000–$9,000 for a typical project, near $4,500 typical. Closed-cell foam and larger areas cost more.
Related project costs
This is general US cost information, not a quote. Actual prices depend on your region, home, materials and contractor — always get quotes from licensed local pros before you commit.