Install Spray Foam Insulation Cost in Belleville, IL in 2026
Most Install Spray Foam Insulation projects in Belleville, IL cost between $3,300 and $14,000. The typical price is $6,500.
Closed-cell spray foam costs the most per square foot and delivers the highest R-value per inch.
Labour and materials in Belleville run about 14% above 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 Belleville, IL
| Quality tier | Cost per sq ft |
|---|---|
| Budget | $2.76 |
| Mid-range | $5.52 |
| High-end | $12 |