Professional Insulation Services in Collinsville, IL

Lower your energy bills, hold heat through cold Illinois winters, and stay cool through hot, humid summers. Start with a FREE on-site evaluation from Collinsville’s trusted insulation team.

FREE on-site evaluation

Same-week installation

Trained, insured installers

Workmanship warranty

Clean, 1-day service

Help claiming rebates

(314) 756-5661

4.9/5 from 581+ verified reviews

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For Your Business

Commercial Insulation Services in Collinsville

Illinois contractors and commercial property owners bring us in for big jobs in Collinsville and across the St. Louis metro and Metro East. We cover apartments, warehouses, offices, retail, and new-construction shells.

Minimal Disruption

Clean, contained work that keeps an occupied building running while we insulate.

Single-Source Crew

One trained, insured team from walkthrough and quote to final sign-off.

Built to Spec

Materials and install methods matched to your architect’s and GC’s drawings.

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Why Collinsville Chooses

Koala Insulation?

A workmanship warranty stands behind our work

Free evaluations with a written, itemized quote

Help claiming available utility rebates

One-day service on most homes

Locally licensed, insured Collinsville team

Even
Temperatures

Fewer
Drafts

Lower
Energy Bill

Our Promise is

Your Comfort

Ask around the neighborhood. The feedback from Collinsville homeowners speaks for the work.

Koala Insulation of Gateway West & Metro East IL place picture
4.9
Based on 581 reviews
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Joseph Beaubien profile picture
Joseph Beaubien
22:18 15 Jul 26
Amazing experience. Koala came out in the blistering heat to help assess our very old attic insulation and not only gave a quote but spent the time answering our questions and educating us on the science behind the process. We had a second floor that was unlivable in the summer months for years. Just a few days after the new R-60 insulation our second floor is easily 15-20 degrees cooler even in the hottest day. I couldn’t be more greatfull for the prompt professional service and installation. Would highly recommend! Thanks Joe and team!!
Andrew Carver profile picture
Andrew Carver
21:06 13 Jul 26
Josh and CJ were great. They were right on time, efficient, professional, and Josh answered all of our questions. I especially appreciated Josh’s knowledge of the end-to-end process for Koala (and Ameren!).
D M profile picture
D M
16:05 15 May 26
This company does quality work! We have a 1930s house with a big squirrel issue in the attic. In addition to other repairs, we needed old insulation removal, enzyme cleaner applied, air sealing, and new insulation. They did all of this and took pictures every step of the way to update me. These guys had a very long day, but were extremely nice and hard-working. If I had to go through this process again, this is who I’d pick in a heartbeat .
Dan Shern profile picture
Dan Shern
14:56 14 May 26
We recently had Koala Insulation blow insulation into our attic and install a Draft Master, and the difference has been noticeable immediately. They also sprayed Attic Fresh throughout the attic, and it honestly made the whole space feel like a brand new build.

Upstairs is already feeling more comfortable, and you can tell the home is holding temperature better. The crew was professional, courteous, and took great care throughout the entire process. They explained everything clearly, worked efficiently, and left everything clean when they finished.

Overall, a great experience from start to finish. I’d definitely recommend Koala Insulation to anyone looking to improve their home’s comfort and energy efficiency.
Ken Kriegshauser profile picture
Ken Kriegshauser
15:19 20 Apr 26
I found Koala Insulation through the Ameren/Spire Pays program. We needed a lot more insulation up in the attic to help with our comfort in the house. Josh and crew came on time and were great to work with. They took care working in the house. They put down plastic on the floors where they were running their tube. At one point their tube sprung a leak outside in the yard. They took the time to vacuum up all the stuff that blew into the yard to make it look good. They answered all my questions and even made a few suggestions that I could do to help with my attic in the future. I would highly recommend them.

Frequently Asked

Questions

A few of the questions Collinsville homeowners ask before they book. Something we missed? Call (314) 756-5661 or book your free quote now.

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How much should I budget for insulation in Collinsville?

A few factors set the price of any insulation job in Collinsville. Attic or wall size, the insulation type you pick, blown-in, fiberglass, or spray foam, and the scope of prep all move the number. If old or damaged insulation needs to come out first, or the attic is tight to work in, that adds to the scope. The honest answer is that we price it after seeing it, with a free evaluation and a written quote for your Collinsville home.

What type of insulation is best for a Collinsville attic?

For most Collinsville homes, blown-in insulation over the attic floor plus air sealing gives you the most comfort for the money, especially with sharp seasonal swings between cold and heat. That combination closes the air leaks and thin spots batts usually leave behind. Where you need to air seal the roof deck or condition the attic, spray foam is the stronger option. The honest recommendation comes after we inspect your attic, not from a script.

How much attic insulation does a Collinsville home need?

For climate zone 4A, where Collinsville sits, the Department of Energy recommends attics at about R-49 to R-60. A lot of the established homes throughout Collinsville were built with far less, commonly R-19 to R-30. During the free evaluation we check your current R-value and tell you how far off you are. Topping up to the recommended level may also qualify for rebates through Ameren and other local utility programs.

Where do you work besides Collinsville?

Our Collinsville crew works throughout Collinsville and nearby areas including Maryville, Caseyville, Fairview Heights, Edwardsville, and Troy. Unsure if your street is covered? Dial (314) 756-5661 and we’ll check in a moment.

How disruptive is an insulation job?

For blown-in insulation, plan on about a day, and there’s no need to leave your home. Spray foam calls for leaving the home for around a day while it cures and off-gasses. Either way, we’ll walk you through the timeline before booking your Collinsville job.

Ready for a more comfortable home?

Start with a free evaluation and a written quote. We can usually reach Collinsville homes within the week.

Get a FREE Quote