Basic
$1.33 – $3.56 per sq ft
Blown-in fiberglass between and over ceiling joists to the recommended R-value for the climate, eave baffles, depth markers
Install ceiling insulation (fiberglass batt or blown-in) between/above ceiling joists, materials and labor.
Ceiling Insulation in Washington, District of Columbia typically costs $1.57 to $4.19 per sq ft as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Prices in Washington are 5.0% higher than the national average for ceiling insulation.
National average: $1.50 – $4 per sq ft
$1.33 – $3.56 per sq ft
Blown-in fiberglass between and over ceiling joists to the recommended R-value for the climate, eave baffles, depth markers
$1.57 – $4.19 per sq ft
Blown-in fiberglass to the recommended R-value, eave baffles, gaps around IC-rated fixtures filled, hatch weatherstripped
$1.96 – $5.23 per sq ft
Blown-in fiberglass to the recommended R-value, eave baffles, gaps around IC-rated fixtures filled, depth markers, insulated weatherstripped hatch cover
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $0.71 – $1.89 | sq ft |
| Labor | labor | $0.54 – $1.46 | sq ft |
| Supplies & Other | supplies | $0.19 – $0.50 | sq ft |
| Equipment & Disposal | equipment | $0.13 – $0.34 | sq ft |
Connect with local ceiling insulation contractors in Washington for personalized quotes based on your specific project.