Insulation cost per square foot by material (installed)
Typical published planning values — NOT a certified design. Real performance depends on installation quality, framing / thermal bridging, moisture and settling; follow the product data sheet and your local energy code. Foam ignition/thermal-barrier, vapor/moisture control and combustion-air safety are set by the manufacturer and code — check with a professional.
Installed insulation runs from radiant barrier and fiberglass batt at the low end to closed-cell spray foam at the high end. The bands below are labeled planning bands — a sanity guide only; you enter the real price from your own quote. Cost varies by material, R-value, access, prep, air-sealing, removal, region and labor. Use them with the cost per square foot and installation cost tools.
| Material | Installed band (low) | Installed band (high) |
|---|---|---|
| Fiberglass batt | $0.80/ft² | $2.40/ft² |
| Blown-in | $1.00/ft² | $2.80/ft² |
| Cellulose | $1.00/ft² | $2.60/ft² |
| Mineral wool | $1.40/ft² | $4.00/ft² |
| Open-cell foam | $1.00/ft² | $2.50/ft² |
| Closed-cell foam | $1.50/ft² | $4.50/ft² |
| Rigid board | $1.50/ft² | $3.50/ft² |
| Radiant barrier | $0.30/ft² | $0.80/ft² |
Labeled planning bands — a sanity guide only, installed (material + labor). Enter the real price from your own quote. Cost varies by material, R-value, access, prep, air-sealing, removal, region and labor.