Calculate spray foam insulation costs for your project. Estimate material, labor, and total expenses for open-cell and closed-cell foam by square foot.
Closed Cell
Higher R-value, acts as vapor barrier, more structural strength
Recommended Thickness for Application
2″ - 3.5″ for Exterior Walls
Closed cell provides vapor barrier and structural strength
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Planning a spray foam insulation project? Our calculator provides accurate cost estimates based on project area, foam type (open-cell vs closed-cell), thickness, application type, and installation method. Get detailed breakdowns of material costs, labor expenses, R-value performance, and energy savings to budget your insulation project effectively. Spray foam costs typically range from $1.00 to $4.50 per square foot installed, depending on foam type and thickness.
A spray foam insulation cost calculator estimates the total project cost by calculating board feet (area × thickness), material costs per board foot, and professional installation labor. It accounts for two foam types: open-cell ($0.44-$0.65/BF, R-3.5 per inch) and closed-cell ($1.00-$1.50/BF, R-6.5 per inch). The calculator provides cost breakdowns, R-value performance, and estimated energy savings to help homeowners evaluate ROI and compare against traditional insulation options.
Spray Foam Cost Formula
Total Cost = (Area × Thickness) × Material Cost/BF + Labor CostGet precise project costs based on industry-standard material pricing ($0.44-$1.50/board foot) and professional labor rates.
Evaluate cost differences between open-cell (lower cost, good sound dampening) and closed-cell (higher R-value, vapor barrier).
Receive recommended thickness ranges for attics (5-7″), walls (2-3.5″), crawl spaces, basements, metal buildings, and rim joists.
Calculate total R-value achieved based on foam type and thickness to ensure code compliance and energy efficiency.
Estimate annual energy savings (typically $1/sq ft/year) and payback period to evaluate investment ROI.
Compare material-only costs for DIY kits against full professional installation pricing.
Replace blown-in fiberglass or cellulose with spray foam for superior R-value and air sealing.
Insulate exterior walls during framing stage for maximum energy efficiency and code compliance.
Seal crawl space walls and rim joists with closed-cell foam to prevent moisture, mold, and pest issues.
Insulate basement walls and rim joists before finishing for moisture control and thermal comfort.
Prevent condensation and improve temperature control in pole barns, shops, and metal garages.
Seal rim joists in existing homes to eliminate drafts and reduce heat loss in a cost-effective project.
Calculate material costs for DIY foam kit projects under 600 board feet like small attics or basements.
Validate contractor quotes against calculated estimates to ensure fair pricing and avoid overcharges.
Open-cell spray foam costs $1.00-$2.00 per square foot installed at 3 inches thick. Closed-cell costs $1.50-$4.50 per square foot at 2-3 inches. Material-only (DIY) costs are 40-60% less. Prices vary by region, project size (larger = lower per sq ft), and thickness. Get 3+ quotes from licensed contractors for local pricing.