How Much Does Spray Foam Insulation Cost in Seattle, Washington?
Professionally applied open- or closed-cell spray foam insulation in walls, attic or crawlspace, priced per square foot of covered area at typical depth.
Spray Foam Insulation in Seattle, Washington typically costs $1.72 to $5.15 per sq ft as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
$1.72 – $5.15
per sq ftPrices in Seattle are 19.0% higher than the national average for spray foam insulation.
National average: $1.50 – $4.50 per sq ft
Cost Breakdown in Seattle
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $0.70 – $2.10 | sq ft |
| Labor | labor | $0.71 – $2.12 | sq ft |
| Supplies & Other | supplies | $0.19 – $0.56 | sq ft |
| Equipment & Disposal | equipment | $0.12 – $0.37 | sq ft |
Spray Foam Insulation photo examples
Gloved hand spraying foam insulation between attic rafters
Photo: Photo-Flare · CC BY 2.0 · Source
Installer in protective suit spraying foam into a wall stud bay
Photo: dunktanktechnician · CC BY 2.0 · Source
Installer in protective gear spraying foam in a crawlspace
Cost Factors in Seattle, Washington
What Affects Pricing
- Materials ($0.67-$2.02 per square foot)
- Labor ($0.53-$1.58 per square foot)
- Supplies & Other ($0.18-$0.54 per square foot)
- Equipment & Disposal ($0.12-$0.36 per square foot)
Local Price Adjustments
Labor costs in Seattle run proportionally higher than materials, which may favor material-heavy solutions.
Frequently Asked Questions
References
- HomeGuide: Spray foam insulation cost, HomeGuide, retrieved Nov 2026
- HomeAdvisor: Spray foam insulation cost, HomeAdvisor, retrieved Nov 2026
- Thumbtack: Spray foam insulation cost, Thumbtack, retrieved Nov 2026
- Construction wages by metro and rural area, used for the labor adjustment by ZIP code, U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025
- Regional price parities for goods, used for the materials adjustment by ZIP code, U.S. Bureau of Economic Analysis, 2024
Get Free Estimates in Seattle
Connect with local spray foam insulation contractors in Seattle for personalized quotes based on your specific project.