Insulation Cost in District of Columbia
City-by-city comparison for the same default project size, priced with BLS metro CPI where available and a regional model elsewhere. Use the table to gauge how much your ZIP code alone will move the quote.
Cheapest District of Columbia metro
$5,965
Washington
Statewide median
$5,965
Across 1 District of Columbia cities
Most expensive District of Columbia metro
$5,965
Washington
Insulation — City-by-City Total
Open national calculator →| City | Cost multiplier | Typical project total | Detail |
|---|---|---|---|
| Washington | 1.14× | $5,965 | Open → |
All totals priced with the calculator's default scope. To re-run for your specific project size, open the city link in the right column. Local labor wages and seasonality (below) are pulled from BLS OEWS and NOAA climate normals for District of Columbia.
Typical Project Cost by Insulation Type
Adjusted for Washington, DC (+14%)Same default project size (default scope), priced across each material tier.
| Tier | Material rate | Total project | Installed per sqft |
|---|---|---|---|
| Fiberglass Batt | — | $4,765 | $4 |
| Blown-In Cellulose | $2.49 | $5,965 | $5 |
| Open-Cell Spray Foam | $4.48 | $8,353 | $7 |
| Closed-Cell Spray Foam | $7.46 | $11,929 | $10 |
Material rates reflect the latest BLS construction PPI adjustment. Installed totals include labor and supplies but exclude permits and any tear-out beyond the calculator's default scope.
Tier table priced for Washington, the state's largest metro by population. Per-city totals in the table above use the same default scope across the 1 cities we cover.
Local Labor Rates Near District of Columbia
State-level mean hourly wages from BLS OEWS, May 2023.
| Trade | SOC | Mean hourly (DC) | vs national | Loaded billing rate |
|---|---|---|---|---|
| RoofersMost relevant | 47-2181 | $25.50 | -1.5% | ~$61/hr |
| Electricians | 47-2111 | $36.92 | +14.6% | ~$89/hr |
| Plumbers & Pipefitters | 47-2152 | $38.74 | +18.0% | ~$93/hr |
| HVAC Mechanics | 49-9021 | $30.76 | +7.3% | ~$74/hr |
| Carpenters | 47-2031 | $31.22 | +7.8% | ~$75/hr |
| Painters | 47-2141 | $27.13 | +9.5% | ~$65/hr |
| Construction Laborers | 47-2061 | $28.10 | +23.3% | ~$67/hr |
"Mean hourly" is the BLS OEWS state-level cross-industry mean wage paid to the worker. Loaded billing rate is a typical 2.4× multiple used in residential bids to cover overhead, insurance, taxes, vehicle, and contractor margin. Use it as a sanity check on a quoted hourly rate.
Best Months to Schedule Roof replacement & repair in District of Columbia
Derived from NOAA climate normals for DC: heating/cooling degree days, freeze months, and annual precipitation.
Why these months
Mixed-season weather (41" annual rain, 3 freeze months) means shoulder months avoid summer storms and winter freeze-thaw on flashing.
Booking tip
Reach out 6–8 weeks before your target install month to lock in a crew before peak demand.
Recommendations derived from District of Columbia's climate profile (IECC zone 4A, ~3 freeze months, 41" annual precipitation).
About this comparison
Project totals on this page use the calculator's default size and tier — they are designed for inter-city comparison, not as a quote. Pricing is built from the BLS residential construction PPI for materials and labor, with regional and direct metro CPI applied to capture local cost-of-living differences. Read the full methodology for source detail.