Insulation Cost in San Marcos, TX in 2026
Most Insulation projects in San Marcos, TX cost between $1,400 and $6,000. The typical price is $2,800.
Labour and materials in San Marcos run about 5% 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 San Marcos, TX
| Quality tier | Cost per sq ft |
|---|---|
| Budget | $1.16 |
| Mid-range | $2.32 |
| High-end | $4.83 |
Insulation contractors in San Marcos, TX
Businesses listed on Google near San Marcos, TX. We are not affiliated with them and do not vet them — always confirm licensing and insurance before hiring.
Koala Insulation of Texas Hill Country
5.0(289 reviews)
2190 Clovis Barker Rd, San Marcos, TX 78666
Apex Insulation
5.0(44 reviews)
1951 Aquarena Springs Dr, San Marcos, TX 78666
Bay Insulation of South Texas
4.5(14 reviews)
1600 Clovis Barker Rd #106, San Marcos, TX 78666
Infinity Insulation
5.0(4 reviews)
1504 Aquarena Springs Dr, San Marcos, TX 78666
Alpha Insulation Co
5.0(4 reviews)
108 North St, San Marcos, TX 78666
San Marcos Insulation Company
No rating yet
101 E Hopkins St, San Marcos, TX 78666