Basic
$1.46 – $3.41 per sq ft
1-1/2 in. foil-faced polyiso sheathing (about R-9), cap-nailed, seams taped, flashing tape at window and door openings, ready for siding
How Much Does Insulated Sheathing Cost in Seattle, Washington?
Install 1-2 in. rigid foam (XPS, EPS or polyiso) insulated sheathing on exterior walls with taped seams, before siding, per sq ft of wall, materials and labor.
Insulated Sheathing in Seattle, Washington typically costs $1.72 to $4.01 per sq ft as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Insulated Sheathing in Seattle, Washington
$1.72 – $4.01
per sq ftPrices in Seattle are 19.0% higher than the national average for insulated sheathing.
National average: $1.50 – $3.50 per sq ft
What you get at each price level
Standard
$1.72 – $4.01 per sq ft
1-1/2 in. foil-faced polyiso sheathing (about R-9), cap-nailed, seams taped as an air barrier, flashing tape at window and door openings
Premium
$2.15 – $5.01 per sq ft
1-1/2 in. foil-faced polyiso sheathing (about R-9), cap-nailed, seams taped as an air barrier, flashing tape at openings, plates and corners sealed
Cost Breakdown in Seattle
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $0.71 – $1.63 | sq ft |
| Labor | labor | $0.70 – $1.65 | sq ft |
| Supplies & Other | supplies | $0.19 – $0.44 | sq ft |
| Equipment & Disposal | equipment | $0.12 – $0.29 | sq ft |
Prices adjusted for Seattle local market conditions.
Insulated Sheathing photo examples
Apartment building wall wrapped in rigid insulated sheathing panels during construction
Photo: anneileino · CC0 · Source
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Cost Factors in Seattle, Washington
What Affects Pricing
- Materials ($0.68-$1.57 per square foot)
- Labor ($0.52-$1.23 per square foot)
- Supplies & Other ($0.18-$0.42 per square foot)
- Equipment & Disposal ($0.12-$0.28 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
References
- Insulation Installation Cost Per Sq Ft (2026) EZ-Estimates, ez-estimates.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 insulated sheathing contractors in Seattle for personalized quotes based on your specific project.