Spray Foam Insulation Cost Calculator
Estimate spray foam cost by board feet.
Last updated: June 2026
📋Full cost guides, how-to steps, and contractor pricing breakdowns at EstimatorSuite.com
Most common application. Open-cell typical for attic floor.
Spray Foam Estimate
Board feet needed6,000sq ft × thickness
Total R-valueR-21.63.6/inch × 6"
Material cost$1,584 - $2,340
Total installed costOpen-Cell Spray Foam
$2,640 - $3,900
Pros: Cheaper, sound dampening, expands to fill gaps
Cons: Absorbs moisture, lower R-value, not for exterior
Based on: 1,000 sq ft × 6" = 6,000 board feet of Open-Cell Spray Foam. Prices from HomeAdvisor + Angi 2026. Last verified: June 2026.
Disclaimer: These estimates are for budgeting purposes only. Actual costs depend on your location, current material prices, and contractor rates. Always get 2-3 quotes from licensed contractors before starting any project.