4.4 
25 *The Angi rating for Insulation Service companies in Willimantic, CT 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 Willimantic, CT 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 March 17, 2026
Serving Willimantic, CT and surrounding areas
Approved
In business since 2006
Free estimates
Emergency services offered
"Fantastic. Responded to my request and provided quote quickly. Work was exceptional. Workmen were friendly, professional and repaired my insulation perfectly. Couldn't be happier."
+33
Serving Willimantic, CT and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"Small family business. Pleasant C.S.and scheduling experience with back office. Partners were very accommodating and their workers were friendly, neat and completed the full attic 50 year old insulation removal and new batt insulation install in a timely manner."
+5
Serving Willimantic, CT and surrounding areas
Approved
In business since 2022
Free estimates
Warranties offered
"They clean up their mess when they leave very courteous"
+21
Serving Willimantic, CT and surrounding areas
Approved
In business since 2015
Free estimates
Emergency services offered
"Very professional and treat customers as if they were their family, very personalized attention and work. Excellent work!"
+26
Serving Willimantic, CT and surrounding areas
Approved
In business since 2001
Free estimates
Credit card accepted
"I liked that the first questions we were asked was "Have you had a home energy audit done? Did you know you can get a rebate on your insulation project?" Before even knowing the scope of our project, they were looking to help make it more affordable for us."
Serving Willimantic, CT and surrounding areas
Approved
In business since 2016
Free estimates
Warranties offered
"The initial contact and meeting with the contract was very friendly and informative. The crew members and supervisor kept us informed throughout the installation and left the space immaculate."
+22
Serving Willimantic, CT and surrounding areas
Approved
In business since 2003
Free estimates
Emergency services offered
"Perfect wall did a excellent job with spray foam insulation also had installed the drywall that is still perfect 6 years later i would definitely hire them again highly recommend them for all your drywall & insulation needs"
+1
Serving Willimantic, CT and surrounding areas
Approved
In business since 2016
Free estimates
Warranties offered
"Great job on basement insulation."
+5
Serving Willimantic, CT and surrounding areas
Approved
In business since 1987
Free estimates
Warranties offered
"the product was excellently done. I am a contractor and I needed the job done quickly to get it on the market. they finished it in one day and left the cellar cleaner than when they came.arrtco llc James stablein project manager t t"
+13
Serving Willimantic, CT and surrounding areas
Approved
In business since 2016
Free estimates
Emergency services offered
"They were very thorough and professional. Very personable."
+4
From average costs to expert advice, get all the answers you need to get your job done.
New insulation can make your home more comfortable and boost energy efficiency. Use this insulation cost guide to get an accurate estimate for the installation.
Insulating your attic can massively improve your home’s efficiency and reduce electric bills. Use this guide to find out what attic insulation will cost you.
Your home's ceiling insulation cost will depend on several factors, including the project size, the type of insulation you use, and the R-value.
What is insulation? This behind-the-scenes home fixture will maintain comfortable temperatures in your home no matter the season. It’ll lower energy bills, to boot.
Use this DIY checklist for insulation repair to make your living space more comfortable and reduce your heating and cooling bills in the process.
There are 10 types of insulation you can use for your home. Read this guide to discover which insulation types could be best for the job.
