Spray Foam Insulation Cost Calculator
Spray Foam Cost
Spray foam insulation costs $2.00 to $5.50 per square foot of surface area installed, depending on the project size, conditions, location, and whether it is open-cell or closed-cell foam.
| Square feet | Average installed cost |
|---|---|
| 100 | $200 – $550 |
| 200 | $400 – $1100 |
| 300 | $600 – $1,650 |
| 400 | $800 – $2,200 |
| 500 | $1000 – $2,750 |
Spray foam insulation in existing walls cost
Installing spray foam insulation in existing walls costs $3,700 to $9,500 on average, depending on the project size. Installers spray slow-rising “injection foam” through holes drilled in the drywall or siding to fill the existing stud cavities.
- Closed-cell injection foam adds strength to the walls.
- Open-cell injection foam is better for sound dampening.
Attic spray foam insulation cost
Attic spray foam insulation costs $1,500 to $7,800+ on average for the floor, depending on the foam type and R-value. Attic insulation companies recommended open-cell foam in vented attics to fill floor nooks and crannies, but it may require a vapor barrier in cold climates.
| Location | Average cost installed |
|---|---|
| Attic floor | $1,500 – $7,800 |
| Attic rafters / roof deck | $1,900 – $10,000 |
Cost to spray foam insulate a garage
Insulating a garage door with spray foam costs $300 to $500, while insulating all the garage walls cost $2,900 to $9,800. Closed-cell spray foam is ideal for unfinished garage walls. Open-cell foam is better for a finished garage.
Process To Get Spray Foam Insulation Cost Estimate Report
Here I am going to share some steps to get your spray foam insulation cost estimate report.
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