Thermo Insulation LLC
Verified Pro
3½+ years online5.0(51)
Insulation Services in Joliet, IL
Compare 26 insulation services contractors near you in Joliet and surrounding area with an average rating of 4.7/5. Get free quotes, read reviews, and find the right pro for your project.
Last updated March 23, 2026
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Other Businesses in This Area
Kros Attic Insulation Solution
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4.5Insulation Services in Nearby IL Cities
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Insulation Services in Joliet, IL
Joliet IL insulation upgrades pay back fast given Nicor/ComEd rates and IL's brutal winters. Most pre-1990 Joliet homes have R-19 to R-30 attics — well below the modern R-49+ target. ComEd rebates available. NeedInstall connects you with Joliet insulation contractors who handle ComEd paperwork, blower-door testing, and proper detailing.
Joliet attic top-up to R-49+: $1,800-$4,500. Wall dense-pack: $4,500-$11,000 retrofit. Basement spray-foam: $4-$7 per board foot. IL requires a state contractor's registration. ComEd rebates ($300-$2,000+). Blower-door test ($300-$500) often required.
Frequently Asked Questions
- Worth on natural gas?
- Yes — IL heating loads. Payback 4-7 years.
- ComEd rebate?
- $300-$2,000+ for qualifying upgrades.
- Spray-foam vs cellulose?
- Cellulose for attics. Spray-foam for basements.
About NeedInstall
NeedInstall helps connect customers with local installation professionals across Joliet and surrounding communities. Featured contractors have claimed their profile and verified their business information. Listings marked as "Verified Pro" have been confirmed by the business owner.