Basic
$49 – $146 each
Exterior gaps caulked with siliconized acrylic latex, adhesive foam weatherstrip added at the sash

Caulk and weatherstrip one window to stop air and water leaks, per window.
Seal Windows in Seattle, Washington typically costs $57 to $172 each as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Prices in Seattle are 19.0% higher than the national average for seal windows.
National average: $50 – $150 each
$49 – $146 each
Exterior gaps caulked with siliconized acrylic latex, adhesive foam weatherstrip added at the sash
$57 – $172 each
Failed caulk cut out, exterior perimeter recaulked with siliconized acrylic, V-strip weatherstrip at sashes
$72 – $215 each
Old caulk removed, backer rod in wide gaps, polyurethane sealant outside, interior trim sealed, new sash weatherstrip
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $23 – $71 | each |
| Labor | labor | $24 – $70 | each |
| Supplies & Other | supplies | $6.24 – $19 | each |
| Equipment & Disposal | equipment | $4.16 – $12 | each |
Labor costs in Seattle run proportionally higher than materials, which may favor material-heavy solutions.
BuildX Pro researches and reviews the national price range for Seal Windows, then adjusts it to your ZIP code for local labor and material costs using the public data below. Last checked Nov 2026.
Connect with local seal windows contractors in Seattle for personalized quotes based on your specific project.