Basic
$3.65 – $7.56 per sq ft
Loose-fill fiberglass blown to about R-38 across the attic floor, eave baffles where missing, hatch dam built, depth markers set
How Much Does Install Blown-In Attic Insulation Cost in Seattle, Washington?
Install Blown-In Attic Insulation: national installed price range, materials and labor breakdown, and local pricing by ZIP code.
Install Blown-In Attic Insulation in Seattle, Washington typically costs $4.29 to $8.90 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 Blown-In Attic Insulation in Seattle, Washington
$4.29 – $8.90
per sq ftPrices in Seattle are 19.0% higher than the national average for install blown-in attic insulation.
National average: $3.75 – $7.77 per sq ft
What you get at each price level
Standard
$4.29 – $8.90 per sq ft
Loose-fill fiberglass blown evenly to about R-38, eave baffles installed, dam around the attic hatch, depth markers and attic card
Premium
$5.37 – $11 per sq ft
Loose-fill fiberglass blown evenly to about R-38, eave baffles, hatch dam with insulated cover, depth markers and attic certificate
Cost Breakdown in Seattle
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $1.76 – $3.64 | sq ft |
| Labor | labor | $1.76 – $3.64 | sq ft |
| Supplies & Other | supplies | $0.47 – $0.97 | sq ft |
| Equipment & Disposal | equipment | $0.31 – $0.64 | sq ft |
Prices adjusted for Seattle local market conditions.
Install Blown-In Attic Insulation photo examples
Installer in a protective suit blowing loose-fill insulation across an attic floor
Photo: USFWS Mountain Prairie · Public domain · Source
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Cost Factors in Seattle, Washington
What Affects Pricing
- Materials ($1.69-$3.50 per square foot)
- Labor ($1.31-$2.72 per square foot)
- Supplies & Other ($0.45-$0.93 per square foot)
- Equipment & Disposal ($0.30-$0.62 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 Blown-In Attic Insulation, 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
Get Free Estimates in Seattle
Connect with local install blown-in attic insulation contractors in Seattle for personalized quotes based on your specific project.