Insulation Cost in Knoxville, TN in 2026
Most Insulation projects in Knoxville, TN cost between $1,400 and $6,000. The typical price is $2,800.
Labour and materials in Knoxville run about 3% 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 Knoxville, TN
| Quality tier | Cost per sq ft |
|---|---|
| Budget | $1.17 |
| Mid-range | $2.35 |
| High-end | $4.89 |
Insulation contractors in Knoxville, TN
Businesses listed on Google near Knoxville, TN. We are not affiliated with them and do not vet them — always confirm licensing and insurance before hiring.
Koala Insulation of Greater Knoxville
5.0(425 reviews)
211 Sherway Rd A, Knoxville, TN 37922
Home Comfort Solutions
4.9(434 reviews)
10337 Yellow Pine Ln, Knoxville, TN 37932
Accu-Coat Spray Foam Insulation
4.8(321 reviews)
5165 US-411, Maryville, TN 37801
Superior Spray Foam Systems
4.9(99 reviews)
1522 Huxley St, Alcoa, TN 37701
RetroFoam of East Tennessee
4.8(104 reviews)
207 Center Park Dr #2040, Knoxville, TN 37922
USA Insulation of Knoxville
4.8(84 reviews)
3222 NW Park Dr, Knoxville, TN 37921