Insulation Cost in Johns Island, SC in 2026
Most Insulation projects in Johns Island, SC cost between $1,400 and $5,500. The typical price is $2,700.
Labour and materials in Johns Island run about 9% below the national average. These figures are adjusted for that, so they are not the national average you will find elsewhere.
What drives the price
- Batt, blown-in cellulose or closed-cell spray foam
- Target R-value for your climate zone
- Attic, wall or crawlspace access
- Air sealing done alongside the insulation
Usually included
- Insulation material to the specified R-value
- Installation and air sealing at obvious gaps
- Cleanup and disposal
Usually extra
- Removing contaminated existing insulation
- Ventilation or moisture remediation
- Drywall work for wall injection
Unit prices in Johns Island, SC
| Quality tier | Cost per sq ft |
|---|---|
| Budget | $1.13 |
| Mid-range | $2.26 |
| High-end | $4.70 |
Insulation contractors in Johns Island, SC
Businesses listed on Google near Johns Island, SC. We are not affiliated with them and do not vet them — always confirm licensing and insurance before hiring.
IBP Charleston
4.5(21 reviews)
4767 Rivers Ave, North Charleston, SC 29405
Affordable Spray Foam
4.7(15 reviews)
1942 Sunnyvale Ave, Charleston, SC 29414
USA Insulation of Charleston
4.9(9 reviews)
7360 Cross County Rd Unit 101, North Charleston, SC 29418
Easy Way Insulation
4.4(11 reviews)
5920 Campbell St, Hanahan, SC 29410
Atlantic Spray Foam Charleston
5.0(7 reviews)
5718 SC-165, Ravenel, SC 29470
Foam Tech Professionals, LLC
5.0(1 reviews)
1082 River Rd, Johns Island, SC 29455