Basic
$827 – $1,655 each
White fiberglass horizontal slider with low-E double-pane glass, cam lock and screen on the operating sash, interior trim
Replace one standard-size fiberglass horizontal sliding window, installed.
Fiberglass Sliding Window in Seattle, Washington typically costs $973 to $1,947 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 fiberglass sliding window.
National average: $850 – $1,700 each
$827 – $1,655 each
White fiberglass horizontal slider with low-E double-pane glass, cam lock and screen on the operating sash, interior trim
$973 – $1,947 each
Fiberglass horizontal slider with low-E argon glass and warm-edge spacers, smoother rolling sash, tan frame, sealed
$1,217 – $2,433 each
Fiberglass horizontal slider with dark exterior color, low-E argon glass with grilles between the glass, rolling sash
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $397 – $796 | each |
| Labor | labor | $399 – $797 | each |
| Supplies & Other | supplies | $106 – $212 | each |
| Equipment & Disposal | equipment | $71 – $141 | each |
Labor costs in Seattle run proportionally higher than materials, which may favor material-heavy solutions.
Connect with local fiberglass sliding window contractors in Seattle for personalized quotes based on your specific project.