Basic
$2.84 – $5.84 per sq ft
Blown fiberglass to about R-49 over the attic floor, eave baffles, depth markers
How Much Does Insulate Attic Cost in Charleston, South Carolina?
Insulate Attic: national installed price range, materials and labor breakdown, and local pricing by ZIP code.
Insulate Attic in Charleston, South Carolina typically costs $3.34 to $6.87 per sq ft as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Insulate Attic in Charleston, South Carolina
$3.34 – $6.87
per sq ftPrices in Charleston are 8.0% lower than the national average for insulate attic.
National average: $3.60 – $7.40 per sq ft
What you get at each price level
Standard
$3.34 – $6.87 per sq ft
Blown fiberglass to about R-49, rafter vent baffles at every bay, attic hatch weatherstripped, depth markers
Premium
$4.18 – $8.59 per sq ft
Blown fiberglass to about R-49, rafter vent baffles at every bay, insulated weatherstripped hatch cover, dams around flues, depth markers
Cost Breakdown in Charleston
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $1.56 – $3.20 | sq ft |
| Labor | labor | $1.10 – $2.25 | sq ft |
| Supplies & Other | supplies | $0.41 – $0.85 | sq ft |
| Equipment & Disposal | equipment | $0.28 – $0.57 | sq ft |
Prices adjusted for Charleston local market conditions.
Insulate Attic photo examples
Pink fibreglass batt insulation laid between attic joists under the roof rafters
Photo: zieak · CC BY 2.0 · Source
Find a pro to do thisYellow fibreglass batts stuffed into an attic eave space
Photo: MarkDoliner · CC BY-SA 2.0 · Source
Find a pro to do thisCellulose insulation being blown into an attic by a worker in protective gear
Photo: USFWS Mountain Prairie · Public domain · Source
Find a pro to do this
Cost Factors in Charleston, South Carolina
What Affects Pricing
- Materials ($1.62-$3.33 per square foot)
- Labor ($1.26-$2.59 per square foot)
- Supplies & Other ($3.60-$7.40 per square foot)
- Equipment & Disposal ($3.60-$7.40 per square foot)
Local Price Adjustments
Material costs4.0% below avg
Labor costs13.0% below avg
Material costs in Charleston run proportionally higher than labor, which may favor labor-intensive approaches.
Frequently Asked Questions
How we price this
BuildX Pro researches and reviews the national price range for Insulate Attic, then adjusts it to your ZIP code for local labor and material costs using the public data below. Last checked Sep 2026.
- Construction wages by metro and rural area, used for the labor adjustment by ZIP code, U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025
- Regional price parities for goods, used for the materials adjustment by ZIP code, U.S. Bureau of Economic Analysis, 2024
Get Free Estimates in Charleston
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