4.6 
37 *The Angi rating for Drywall Insulation companies in Ottawa, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Drywall Insulation needs.
*The HomeAdvisor rating for Drywall Insulation companies in Ottawa, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Drywall Insulation needs.
Last update on July 16, 2026
Serving Ottawa, IL and surrounding areas
Approved
In business since 2000
Free estimates
Customers say: True professional
"Installed additional insulation in attic and walls and did an excellent job. Also put in attic vents and exhaust fan. I will hire again for various construction projects."
+8
Serving Ottawa, IL and surrounding areas
Approved
In business since 1975
Free estimates
Offers commercial services
"Slagel insulation provided the work that was asked of them. I would hire them back."
+13
Serving Ottawa, IL and surrounding areas
Approved
In business since 2004
Free estimates
Emergency services offered
"Devan, Lauren and Brendan were my main points of contact with Home Genius Exteriors and they showed professionalism and personality throughout the whole process. Both Brendan and Devan spent time taking to me, even after our business was concluded, this was an exceptional experience and I highly recommend Home Genius Exteriors and all their employees."
Serving Ottawa, IL and surrounding areas
Approved
In business since 2004
Free estimates
Emergency services offered
"We originally had Home Genius do our roof last year, so when it was time to do our siding a few months ago we called them again because of their exceptional service and professionalism. And now we just had some windows replaced and will be calling them for any future needs."
Serving Ottawa, IL and surrounding areas
In business since 1948
Emergency services offered
Credit card accepted
"Very established company with dedicated, respectful, courtesy employees. One of their products is blown-in insulation. We had them insulate our attic, foundation, and a crawl space under a room which gets cold during winter months. Our home is a large L-Shaped Ranch. It has made a difference in heating of our home. We had them take the old insulation out of the attic, which they vacuumed into bag and hauled away. Home Comfort also offers repair of driveways, where cracks have either sunken or raised the concrete. They repaired the few spots in my driveway, making it where someone won't trip on the crack and fall. I definitely recommend Home Comfort Insulation."
Serving Ottawa, IL and surrounding areas
In business since 1948
Free estimates
Emergency services offered
"They were great! They did the job without us even being home, accessing our house from a key box. That was very convenient. Only issue was that they had to schedule us out 2 weeks- they are busy!"
Serving Ottawa, IL and surrounding areas
In business since 2000
Emergency services offered
Warranties offered
"Neil did the job fantastically and explained what he was doing throughout, always asked for an inspection to make sure it was done to my satisfaction. Pricing was extremely fair and he was timely and quick. Would highly recommend for any insulation work you need done. Can’t speak on the other work he does, but if it’s on par with what he did for me, then you’d be doing well."
+11
Serving Ottawa, IL and surrounding areas
In business since 2025
Free estimates
Emergency services offered
"This company is fantastic, highly recommended"
+4
Serving Ottawa, IL and surrounding areas
In business since 1978
"these guys are great,they do what they promise,they are efficient and the quote was right on.you wont be sorry if you choose them."
Serving Ottawa, IL and surrounding areas
In business since 2019
Free estimates
Credit card accepted
"USA Insulation came out and blew in the pink stuff up to R49. The crew arrived on time, was professional and very thorough with what they were going to do before starting, communicating during of their progress and then a 'show and tell' after the work was completed. Cleanup afterwards let my house cleaner than before they showed up and only took them around 1 1/2 - 2hrs from start to finish (for a 1425 sq ft attic). The entire process, from start to finish, exceeded my satisfaction and we will most certainly be recommending USA Insulation to our friends and family."
+2
From average costs to expert advice, get all the answers you need to get your job done.
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