Quick Answer: Insulation costs $1–$5+ per square foot installed. Fiberglass batts run $0.85–$1.40/sq ft for material. Blown-in costs $1.00–$1.50/sq ft. Spray foam is $2.50–$4.00/sq ft. Labor adds $0.60–$1.25/sq ft based on insulation worker rates of $19.68–$27.97/hr nationally. A 1,000 sq ft attic costs $1,000–$5,000 depending on type and R-value. Enter your ZIP for local pricing. Our calculator also shows your DOE/IECC climate zone and recommended R-values when you enter a ZIP — plus BLS Producer Price Index adjustments so material costs reflect current market conditions.
Calculate insulation costs by type, area, R-value, and ZIP code. Get a location-specific estimate with a full breakdown of materials, labor, and equipment costs.
Insulation Cost by Type
| Type | Cost/Sq Ft | R-Value/Inch | Best For | DIY? |
|---|---|---|---|---|
| Fiberglass Batt | $1–$2 | R-3.7 | Walls, floors | Yes |
| Blown-In | $1.25–$2.50 | R-3.2–3.8 | Attics, walls | Moderate |
| Spray Foam | $2.50–$6 | R-3.7–6.5 | Air sealing, crawlspaces | No |
| Rigid Board | $1.50–$3.50 | R-3.8–6.5 | Basements, exteriors | Moderate |
How Insulation Cost Is Calculated
- Material: Area × $0.50–$4.00/sq ft depending on type and R-value tier.
- Supplies: Area × $0.10–$0.25/sq ft for vapor barrier, tape, staples, and sealant.
- Labor: Area × hours/sq ft × hourly rate × 1.5 burden. Blown-in is fastest (0.015 hr/sq ft); spray foam slowest (0.03 hr/sq ft).
- Fixed costs: Equipment rental ($0–$150), prep and masking ($50–$150), cleanup ($50–$100), and old insulation disposal ($50–$100).
- Contractor markup: 20% for overhead, profit, and warranty.
Formula Summary
Insulation Cost Formula: Total = (A × M + A × S + A × H × R × 1.5 + F) × 1.20
where A = area (sq ft), M = material/sq ft, S = supplies/sq ft, H = labor hours/sq ft, R = hourly rate, 1.5 = burden, F = fixed costs, 1.20 = markup.
Constants: Labor burden 1.5×. Markup 20%. Trade: insulation workers (SOC 47-2131). BLS OEWS May 2024, 393 metros. National rates: $19.68 (P25), $24.61 (mean), $27.97 (P75).
Additional data: DOE/IECC climate zones (3,200+ counties mapped to 33,700+ ZIPs) with ENERGY STAR R-value recommendations. BLS PPI material price indexing (monthly, 10 construction material series via FRED API). Material costs reflect current PPI-adjusted pricing as of the latest monthly release.
Insulation Workers Hourly Rates by Metro (BLS OEWS May 2024)
| Metro | 25th %ile | Mean | 75th %ile |
|---|---|---|---|
| New York | $22.54 | $38.02 | $52.45 |
| Los Angeles | $18.47 | $23.11 | $22.49 |
| Chicago | $23.13 | $29.54 | $34.19 |
| Dallas | $20.28 | $23.79 | $27.17 |
| Houston | $19.24 | $22.70 | $26.13 |
| Washington | $21.29 | $27.45 | $31.53 |
| Philadelphia | $21.67 | $30.13 | $37.98 |
| Miami | $22.03 | $23.47 | $25.05 |
| Atlanta | $18.80 | $23.89 | $25.99 |
| Phoenix | $18.29 | $24.55 | $29.05 |
Need Material Quantities?
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Calculate exact insulation batts or rolls needed for your project.
Related Calculators
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- Home Addition Cost Calculator — full addition cost with insulation included
Estimates are for planning purposes only. Consult a qualified contractor for critical projects. Actual material requirements may vary based on site conditions, waste, and installation methods.
Pricing last verified: February 2026. Material prices vary by region, season, and supplier. Prices shown are national averages for planning purposes.