Insulation Cost Calculator
An insulation cost calculator estimates the price to insulate a space by multiplying the area by your price per square foot for the insulation type and R-value. Batts, blown-in and spray foam each cost differently. Enter your area and price per square foot below for an estimate.
insulation price per sqft at target R-value, user-entered.
Enter the dimensions to estimate the cost.
Estimate only. Prices vary by region, supplier, material grade and labor. Enter your own local price; this site never quotes prices.
How Much Does Insulation Cost?
Insulation costs the area times your price per square foot, which depends on the type and the R-value. Fiberglass batts are the cheapest, blown-in cellulose or fiberglass is mid-range, and spray foam costs the most but seals air leaks best. Higher R-values use more material and cost more. The calculator estimates from your price per square foot, so enter a local rate for your insulation type and target R-value.
Which Insulation Gives the Best Value?
The best-value insulation depends on the location and goal. Batts are cheapest for open walls and attics you can access. Blown-in fills attics and irregular cavities efficiently. Spray foam costs most but adds an air seal that lowers energy bills, paying back over time in the right spots. The calculator estimates upfront cost from your price; weigh it against the energy savings each type offers.
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Frequently asked questions
- How much does insulation cost?
- It is the area times your price per square foot, depending on type and R-value. Batts are cheapest, blown-in mid-range, spray foam highest. Enter your local price.
- Which insulation is the best value?
- Batts for open, accessible areas; blown-in for attics and cavities; spray foam costs most but seals air leaks and cuts energy bills.