4.5 
82 *The Angi rating for Insulation Service companies in Normal, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.
*The HomeAdvisor rating for Insulation Service companies in Normal, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.
Last update on August 24, 2025
Serving Normal, IL and surrounding areas
Approved
In business since 1992
Free estimates
Credit card accepted
"Horn Insulation did a tremendous job insulating our house. The quality of their work was great and they were a pleasure to work with. I highly recommend them!"
Serving Normal, 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 Normal, 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 Normal, IL and surrounding areas
Approved
Free estimates
Emergency services offered
Warranties offered
We do professional foam insulation and we’re trying to be the best
Serving Normal, IL and surrounding areas
In business since 1948
Emergency services offered
Credit card accepted
"Home Comfort Insulation employee's were very courteous and got the job done in a very expeditious timeframe. I highly recommend using them for any of your insulation needs. You won't be disappointed."
Serving Normal, IL and surrounding areas
In business since 1948
Free estimates
Emergency services offered
"The team were very professional, owner came at end of day to check up on quality of job (I asked him to look at my attic insulation, he could have easily conned me into paying for more - he didnt, and told me I didnt really need it... he found another insulation issue but recommended I solve it DIY style!)... so he wasnt interested in the $$$$.... Once he found I was happy with work he left me an invoice, no pressure to pay on the spot. The work has done exactly what he promised and I can recommend using them."
Serving Normal, IL and surrounding areas
In business since 1993
Free estimates
"Very courteous and they clean up afterwards. They give you a lot of insulation for your money. Theyâ re hard workers."
Serving Normal, 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 Normal, IL and surrounding areas
In business since 1978
"This service went above what was expected. They fixed issues that came up and needed attention without altering the original bid. I will recommend them to anyone needing insulation."
Serving Normal, IL and surrounding areas
In business since 2013
Free estimates
Offers commercial services
"Jeff is very prompt and provides quality work at a great price."
+3
From average costs to expert advice, get all the answers you need to get your job done.
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