Professional Insulation Services in Glen Carbon, IL
Hold heat on the coldest Illinois nights and stay cool in the muggiest weeks, while trimming your bills. It starts with a free, no-pressure evaluation from your local Glen Carbon crew.
Free, no-pressure visit
Same-week appointments
Trained, insured installers
Workmanship warranty
Tidy, one-day jobs
Utility rebate assistance
4.9/5 from 581+ verified reviews
Talk to Our Glen Carbon Insulation Experts Today
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Insulation Services for Glen Carbon Homes
Home Insulation
For Your Business
Commercial Insulation for Glen Carbon Properties
Builders, general contractors, and property owners around Glen Carbon count on us for large-scale insulation across the St. Louis metro and Metro East. We work on multifamily, warehouse, office, and new-construction projects.
Energy Code Compliance
Insulation specified to meet your project’s R-value and energy-code requirements.
Built to Spec
Materials and install methods matched to your architect’s and GC’s drawings.
Inspection-Ready Work
Documentation and coverage that hold up from rough-in through final inspection.

Multifamily Buildings

New Construction
Why Choose
Koala Insulation?
Every install backed by a workmanship warranty
No-cost, no-pressure evaluations & quotes
Help claiming available utility rebates
Most jobs completed in just one day
Your local Glen Carbon team, licensed and insured
Superior
Comfort
Lower
Energy Bill
Quieter
Home
Your Satisfaction is
Our Top Priority
The reviews tell the story. Read how Glen Carbon homeowners describe working with our crews.
Frequently Asked
Questions
The questions Glen Carbon homeowners bring up most, answered plainly. If we missed yours, give us a call at (314) 756-5661 or request a free quote.
Get a FREE QuoteWhat goes into the cost of insulation in Glen Carbon?
The cost of an insulation project in Glen Carbon comes down to a few things. It mostly comes down to the size of the space, the material you go with, from blown-in cellulose to fiberglass or spray foam, and the effort involved in access and air sealing. Removing wet or contaminated insulation and working around tight attic access can add to the effort. Many of these projects qualify for rebates through Ameren and other local utility programs, which can offset part of the cost. So rather than guess, we measure your space during a free on-site evaluation and give you a written, itemized quote.
Blown-in or spray foam for my Glen Carbon attic?
Most Glen Carbon attics do best with blown-in coverage and air sealing together, a smart pairing when you deal with the freeze-and-bake swing from January cold to July heat. That combination closes the air leaks and thin spots batts usually leave behind. Spray foam makes sense when you’re sealing the roof line or finishing the attic as living space. We’ll suggest the right product once we see your attic, not before.
What R-value do I need for an attic in Glen Carbon?
Glen Carbon sits in climate zone 4A, where the U.S. Department of Energy recommends about R-49 to R-60 for attics. It’s common to find the newer subdivisions growing around Glen Carbon sitting at only R-19 to R-30, well short of the target. The free evaluation includes measuring what’s up there now so you know the real number. Bringing an attic up to spec can also qualify for rebates through Ameren and other local utility programs.
Which towns near Glen Carbon do you cover?
Our Glen Carbon crew works throughout Glen Carbon and nearby areas including Edwardsville, Maryville, Collinsville, Troy, and Wood River. Not sure if you’re in range? Call (314) 756-5661 and we’ll confirm in about a minute.
Do I have to leave home during the install?
For blown-in insulation, plan on about a day, and there’s no need to leave your home. With spray foam, plan to stay elsewhere for about 24 hours during curing. We confirm which path fits your home during the free evaluation, well before install day.
Ready to stop heating the attic?
Set up a free attic evaluation this week. We offer same-week availability across Glen Carbon.
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