How Much Does 3 Layer Torch Down Roof Cost in Seattle, Washington?
Install a 3-ply torch-applied modified bitumen flat/low-slope roof (base, ply and granulated cap), materials and labor, excluding deck repair.
3 Layer Torch Down Roof in Seattle, Washington typically costs $5.73 to $10 per sq ft as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
3 Layer Torch Down Roof in Seattle, Washington
$5.73 – $10
per sq ftPrices in Seattle are 19.0% higher than the national average for 3 layer torch down roof.
National average: $5 – $9 per sq ft
Cost Breakdown in Seattle
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $2.34 – $4.21 | sq ft |
| Labor | labor | $2.35 – $4.22 | sq ft |
| Supplies & Other | supplies | $0.62 – $1.12 | sq ft |
| Equipment & Disposal | equipment | $0.42 – $0.75 | sq ft |
Prices adjusted for Seattle local market conditions.
Cost Factors in Seattle, Washington
What Affects Pricing
- Materials ($2.25-$4.05 per square foot)
- Labor ($1.75-$3.15 per square foot)
- Supplies & Other ($0.60-$1.08 per square foot)
- Equipment & Disposal ($0.40-$0.72 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
- Angi: Torch Down Roofing Cost, Angi, retrieved Nov 2026
- This Old House: Torch Down Roofing Cost, This Old House, 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
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