4.7 
19 *The Angi rating for Insulation Service companies in Rantoul, 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 Rantoul, 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 12, 2026
Serving Rantoul, 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 Rantoul, 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 Rantoul, IL and surrounding areas
Approved
In business since 2014
Free estimates
Customers say: Quick response
We are a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 10 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!
Serving Rantoul, 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 Rantoul, 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 Rantoul, IL and surrounding areas
In business since 1993
Free estimates
"He came out took a look and with in a week was able to insulate my garage. Did a great job."
Serving Rantoul, IL and surrounding areas
In business since 2015
Free estimates
"Jeremy was quick to come to my house to get me a quote and came on a weekend. He was very thorough and gave advice on how to get my insulation needs done. When I scheduled him to come and do the work on my crawl space and partial basement he came on time and done a amazing job and was quick and thorough. I will recommend him to all my family and friends. Will use his services again for sure. I am also going to get him to come fill my walls of my house."
Serving Rantoul, IL and surrounding areas
In business since 2001
Free estimates
Credit card accepted
"It all went perfectly and was completely finished in 2 days. The next several days we had heavy rains and absolutely no leaks.
I would definitely recommend them."
+13
Serving Rantoul, IL and surrounding areas
In business since 1971
Credit card accepted
"Roberto was the technician and he was very professional, polite, and personable. He inspected the rest of our system and told us things that needed to be changed or repaired. He showed me pictures of everything. Everything he told me about was accurate. He quoted me a price for R38 insulation , Some of our ducts were plastic and he recommended them to be changed. I agreed completely and didn't know they were plastic. I would have had them done the work but I had no price comparisons to make and besides I didn't have the money right then. So he just finished the vent cleaning and left his card. He did a great job on the vent cleaning and was happy with the work."
+2
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