Basic
$3.89 – $7.79 per sq ft
About 1-1/2 in. spray polyurethane foam (about R-9) with acrylic elastomeric coating in two coats
Rendering: BuildX
How Much Does SPF Roof Cost in Seattle, Washington?
Spray polyurethane foam (SPF) roof system on a low-slope roof, foam plus protective elastomeric coating, priced per square foot of roof.
SPF Roof in Seattle, Washington typically costs $4.58 to $9.16 per sq ft as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
SPF Roof in Seattle, Washington
$4.58 – $9.16
per sq ftPrices in Seattle are 19.0% higher than the national average for spf roof.
National average: $4 – $8 per sq ft
What you get at each price level
Standard
$4.58 – $9.16 per sq ft
About 1-1/2 in. spray foam (about R-9) with silicone elastomeric coating, granules on walk paths
Premium
$5.73 – $11 per sq ft
About 1-1/2 in. spray foam (about R-9) with silicone base and topcoat, granules broadcast for durability
Cost Breakdown in Seattle
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $1.87 – $3.74 | sq ft |
| Labor | labor | $1.88 – $3.75 | sq ft |
| Supplies & Other | supplies | $0.50 – $1 | sq ft |
| Equipment & Disposal | equipment | $0.33 – $0.67 | sq ft |
Prices adjusted for Seattle local market conditions.
SPF Roof photo examples
Depth gauge probing the foam thickness on a roof
Rendering: BuildX
Find a pro to do thisWhite elastomeric coating rolled over cured roof foam
Rendering: BuildX
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Cost Factors in Seattle, Washington
What Affects Pricing
- Materials ($1.80-$3.60 per square foot)
- Labor ($1.40-$2.80 per square foot)
- Supplies & Other ($0.48-$0.96 per square foot)
- Equipment & Disposal ($0.32-$0.64 per square foot)
Local Price Adjustments
Material costs4.0% above avg
Labor costs34.0% above avg
Labor costs in Seattle run proportionally higher than materials, which may favor material-heavy solutions.
Frequently Asked Questions
References
- Rescreening Masters: Polyurethane foam roofing cost, rescreeningmasters.com, 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 spf roof contractors in Seattle for personalized quotes based on your specific project.