Spray foam insulation costs between $0.35 and $1.50 per board foot or $1.40 to $2.80 per square foot depending on the type. Most homeowners spend $2,400 to $3,000 for professional spray foam installation with prices ranging from $2400 to $8,000 depending on what needs insulating. Get free estimates from insulation contractors near you.
Spray Foam Insulation Cost
There are two types of spray foam insulation–open cell and closed cell. Open-cell spray foam costs $0.25 to $0.50 per board foot and closed-cell spray foam costs $0.90 to $1.50 per board foot. The average cost of spray foam insulation installation is $2,128 with most homeowners paying between $1,463 and $2,926. Pricing depends on how many parts of the home you wish to insulate and to what thickness.
| National Average Cost | $2,600 |
| Minimum Cost | $2,600 |
| Maximum Cost | $8,000 |
| Average Range | $2,600 to $3,000 |
Spray foam is used in new construction and can also be applied to existing structures. The savings in your energy bills will be noticeable, with most people seeing savings of up to 40%. One of the biggest reasons to use it is for its air-sealing and moisture barrier properties. It expands to 40–100 times its original size, sealing every crack and crevice.
