Basic
$0.71 – $1.66 per sq ft
Unfaced R-13 fiberglass batts friction-fit into 2x4 wall cavities with polyethylene vapor retarder where code requires
How Much Does R13 Insulation Cost in Charleston, South Carolina?
Supply and install R-13 insulation (fiberglass batts or blown) in 2x4 exterior wall cavities.
R13 Insulation in Charleston, South Carolina typically costs $0.84 to $1.95 per sq ft as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
R13 Insulation in Charleston, South Carolina
$0.84 – $1.95
per sq ftPrices in Charleston are 8.0% lower than the national average for r13 insulation.
National average: $0.90 – $2.10 per sq ft
What you get at each price level
Standard
$0.84 – $1.95 per sq ft
Kraft-faced R-13 fiberglass batts stapled to studs, split around wiring and cut tight around boxes and pipes
Premium
$1.04 – $2.44 per sq ft
Formaldehyde-free R-13 batts split around wiring, top plates, penetrations and window gaps sealed with foam and caulk first
Cost Breakdown in Charleston
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $0.37 – $0.90 | sq ft |
| Labor | labor | $0.28 – $0.64 | sq ft |
| Supplies & Other | supplies | $0.11 – $0.24 | sq ft |
| Equipment & Disposal | equipment | $0.08 – $0.16 | sq ft |
Prices adjusted for Charleston local market conditions.
Cost Factors in Charleston, South Carolina
What Affects Pricing
- Materials ($0.39-$0.94 per square foot)
- Labor ($0.32-$0.74 per square foot)
- Supplies & Other ($0.11-$0.25 per square foot)
- Equipment & Disposal ($0.08-$0.17 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 R13 Insulation, then adjusts it to your ZIP code for local labor and material costs using the public data below. Last checked Nov 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
Connect with local r13 insulation contractors in Charleston for personalized quotes based on your specific project.