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How Much Does Fiberglass Insulation Cost in Seattle, Washington?
Supply and install fiberglass insulation (batts or blown) in open walls, floors or attic, materials and labor; old insulation removal excluded.
Fiberglass Insulation in Seattle, Washington typically costs $1.14 to $2.86 per sq ft as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
$1.14 – $2.86
per sq ftPrices in Seattle are 19.0% higher than the national average for fiberglass insulation.
National average: $1 – $2.50 per sq ft
Cost Breakdown in Seattle
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $0.49 – $1.16 | sq ft |
| Labor | labor | $0.44 – $1.18 | sq ft |
| Supplies & Other | supplies | $0.14 – $0.31 | sq ft |
| Equipment & Disposal | equipment | $0.07 – $0.21 | sq ft |
Cost Factors in Seattle, Washington
What Affects Pricing
- Materials ($0.47-$1.12 per square foot)
- Labor ($0.33-$0.88 per square foot)
- Supplies & Other ($0.13-$0.30 per square foot)
- Equipment & Disposal ($0.07-$0.20 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
- Batt Insulation Cost Guide - Builds and Buys, Builds and Buys, 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 fiberglass insulation contractors in Seattle for personalized quotes based on your specific project.