Basic
$1.08 – $2.60 per sq ft
Loose-fill fiberglass blown over the attic floor to an R-49 settled depth of about 16-18 in., eave baffles and depth markers set
Supply and install insulation to about R-49/R-50 in an attic (blown fiberglass/cellulose ~16-18 in., or thick batts), per sq ft; old insulation removal and air sealing extra.
R50 Insulation in Wilmington, Delaware typically costs $1.27 to $3.06 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 Wilmington are 4.0% higher than the national average for r50 insulation.
National average: $1.25 – $3 per sq ft
$1.08 – $2.60 per sq ft
Loose-fill fiberglass blown over the attic floor to an R-49 settled depth of about 16-18 in., eave baffles and depth markers set
$1.27 – $3.06 per sq ft
Blown fiberglass to R-49 with foam baffles at the eave bays, hatch dam, clearance kept around flues and lights
$1.59 – $3.82 per sq ft
Blown cellulose to R-50 with settling allowance, baffles at every eave bay, hatch dam with an insulated hatch cover, depth markers
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $0.55 – $1.31 | sq ft |
| Labor | labor | $0.48 – $1.17 | sq ft |
| Supplies & Other | supplies | $0.15 – $0.35 | sq ft |
| Equipment & Disposal | equipment | $0.10 – $0.23 | sq ft |
Labor costs in Wilmington run proportionally higher than materials, which may favor material-heavy solutions.
Connect with local r50 insulation contractors in Wilmington for personalized quotes based on your specific project.