- Spray foam insulation usually costs $1,450 to $4,350, about $2,900 typical.
- Spray foam insulation in an attic, walls or crawl space.
- Price your own job with the calculator above; it breaks the job into lines.
What spray foam insulation costs
Expect spray foam insulation to cost between $1,450 and $4,350, with $2,900 as a typical figure. Spray foam insulation in an attic, walls or crawl space.
| Price | |
|---|---|
| Low end | $1,450 |
| Typical | $2,900 |
| High end | $4,350 |
The range blends Fixr, Bob Vila and Today's Homeowner (method below). Where you live matters: Koira's estimate is $2,567 in Arkansas and $3,458 in Hawaii.
What drives the price
- How much. Fixr prices insulating a whole home. Bob Vila's and Today's Homeowner's averages are for a typical project.
- Open or closed cell. Today's Homeowner puts open-cell at about $0.44 to $0.65 a board foot. Closed-cell costs more and adds strength.
- Thickness. More inches mean more foam and a higher R-value.
- Prep. Old insulation has to come out first.
Spray foam insulation cost by state
Koira estimates for each state, built from the national $1,450 to $4,350. About 50% of a spray foam insulation price is labor, and only that part is scaled by the state's median wage for construction and extraction workers. A starting point, not a quote.
| State | Low | Typical | High |
|---|---|---|---|
| Alabama | $1,307 | $2,614 | $3,922 |
| Alaska | $1,646 | $3,291 | $4,937 |
| Arizona | $1,432 | $2,863 | $4,295 |
| Arkansas | $1,283 | $2,567 | $3,850 |
| California | $1,598 | $3,195 | $4,793 |
| Colorado | $1,470 | $2,940 | $4,410 |
| Connecticut | $1,597 | $3,194 | $4,791 |
| Delaware | $1,448 | $2,895 | $4,343 |
| District of Columbia | $1,579 | $3,157 | $4,736 |
| Florida | $1,326 | $2,652 | $3,978 |
| Georgia | $1,331 | $2,662 | $3,994 |
| Hawaii | $1,729 | $3,458 | $5,186 |
| Idaho | $1,409 | $2,817 | $4,226 |
| Illinois | $1,706 | $3,412 | $5,118 |
| Indiana | $1,478 | $2,956 | $4,434 |
| Iowa | $1,449 | $2,898 | $4,347 |
| Kansas | $1,394 | $2,789 | $4,183 |
| Kentucky | $1,372 | $2,744 | $4,116 |
| Louisiana | $1,333 | $2,666 | $3,999 |
| Maine | $1,459 | $2,919 | $4,378 |
| Maryland | $1,454 | $2,908 | $4,362 |
| Massachusetts | $1,668 | $3,337 | $5,005 |
| Michigan | $1,470 | $2,940 | $4,410 |
| Minnesota | $1,609 | $3,218 | $4,826 |
| Mississippi | $1,295 | $2,590 | $3,884 |
| Missouri | $1,477 | $2,953 | $4,430 |
| Montana | $1,467 | $2,934 | $4,402 |
| Nebraska | $1,380 | $2,760 | $4,140 |
| Nevada | $1,477 | $2,953 | $4,430 |
| New Hampshire | $1,457 | $2,913 | $4,370 |
| New Jersey | $1,619 | $3,239 | $4,858 |
| New Mexico | $1,333 | $2,665 | $3,998 |
| New York | $1,582 | $3,164 | $4,747 |
| North Carolina | $1,326 | $2,653 | $3,979 |
| North Dakota | $1,470 | $2,940 | $4,409 |
| Ohio | $1,482 | $2,963 | $4,445 |
| Oklahoma | $1,317 | $2,634 | $3,951 |
| Oregon | $1,530 | $3,060 | $4,590 |
| Pennsylvania | $1,462 | $2,924 | $4,386 |
| Rhode Island | $1,493 | $2,985 | $4,478 |
| South Carolina | $1,328 | $2,657 | $3,985 |
| South Dakota | $1,335 | $2,671 | $4,006 |
| Tennessee | $1,340 | $2,680 | $4,020 |
| Texas | $1,324 | $2,647 | $3,971 |
| Utah | $1,421 | $2,842 | $4,263 |
| Vermont | $1,452 | $2,905 | $4,357 |
| Virginia | $1,412 | $2,825 | $4,237 |
| Washington | $1,644 | $3,288 | $4,933 |
| West Virginia | $1,426 | $2,853 | $4,279 |
| Wisconsin | $1,500 | $3,000 | $4,500 |
| Wyoming | $1,453 | $2,905 | $4,358 |
Rural areas and cities in the same state can differ a lot.
How we got these numbers
| Guide | Range | Average | Use |
|---|---|---|---|
| Fixr | $10,000 to $30,000 | $20,000 | Counted |
| Bob Vila | $1,409 to $4,145 | $2,756 | Counted |
| Today's Homeowner | $1,454 to $4,336 | $2,886 | Counted |
We take the middle of the guides' lows for the low end, the middle of their highs for the high end, and the middle of their averages for the typical spray foam insulation price. Where a guide gives no average we use its midpoint. All read on October 9, 2026.
Labor share used: 50%. None of the guides splits labor out for this job, so this share is Koira's working assumption for insulation work. State factor: the state's median hourly wage for construction and extraction workers over the national $28.63 (BLS, May 2025), kept between 0.7 and 1.4.
For contractors: price this job in Koira
Insulation is priced by the square foot and the R-value, so show both on the estimate.
Run the numbers for a real spray foam insulation in the free insulation cost calculator, then save the result as an estimate. On Koira's free Office plan you build the estimate, text it, collect the deposit and turn it into an invoice when the spray foam insulation is done. Price this job in Koira, free.
Sources: Fixr, spray foam insulation cost; Bob Vila, spray foam insulation cost; Today's Homeowner, spray foam insulation cost; BLS Occupational Employment and Wage Statistics, May 2025 (state and national files). Prices checked October 9, 2026. More for your trade: how the trade runs on Koira.