Basic
$7.82 – $10 per sq ft
45 mil black EPDM single-ply membrane fully adhered, taped seams, edge metal and flashings at walls and penetrations
How Much Does Install Membrane Roofing System Cost in Seattle, Washington?
Install Membrane Roofing System: national installed price range, materials and labor breakdown, and local pricing by ZIP code.
Install Membrane Roofing System in Seattle, Washington typically costs $9.19 to $12 per sq ft as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Install Membrane Roofing System in Seattle, Washington
$9.19 – $12
per sq ftPrices in Seattle are 19.0% higher than the national average for install membrane roofing system.
National average: $8.03 – $10 per sq ft
What you get at each price level
Standard
$9.19 – $12 per sq ft
60 mil white TPO single-ply membrane mechanically fastened, hot-air welded seams, edge metal and flashings
Premium
$11 – $15 per sq ft
80 mil white TPO fully adhered over a cover board, hot-air welded seams, reinforced corners, edge metal and flashings
Cost Breakdown in Seattle
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $3.76 – $4.82 | sq ft |
| Labor | labor | $3.77 – $4.82 | sq ft |
| Supplies & Other | supplies | $1 – $1.28 | sq ft |
| Equipment & Disposal | equipment | $0.67 – $0.85 | sq ft |
Prices adjusted for Seattle local market conditions.
Install Membrane Roofing System photo examples
Gray bitumen roofing membrane rolled out in overlapping strips on a flat roof
Photo: Μάριος-Μητσόγλου · CC BY-SA 4.0 · Source
Find a pro to do thisFlat roof covered with a single-ply EPDM membrane and white edge flashing
Photo: KVDP · Public domain · Source
Find a pro to do this
Cost Factors in Seattle, Washington
What Affects Pricing
- Materials ($3.62-$4.63 per square foot)
- Labor ($2.81-$3.60 per square foot)
- Supplies & Other ($8.03-$10.28 per square foot)
- Equipment & Disposal ($8.03-$10.28 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
How we price this
BuildX Pro researches and reviews the national price range for Install Membrane Roofing System, then adjusts it to your ZIP code for local labor and material costs using the public data below. Last checked Sep 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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