4.1 
11 *The Angi rating for Insulation Service companies in South Windham, 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 South Windham, 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 South Windham, 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 South Windham, CT and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"I don’t know why anyone would hire anyone else. Anthony is courteous/responsive, knows insulation cold, was quick to provide estimates and service and is smart about his hires, with net results—great workmanship at a very fair price."
+5
Serving South Windham, 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 South Windham, 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 South Windham, CT and surrounding areas
Approved
In business since 2001
Free estimates
Credit card accepted
"They were great from start to finish. clean on time and quality work."
Serving South Windham, CT and surrounding areas
Approved
Super Service Award Winner
In business since 2018
Free estimates
Emergency services offered
"Recently had my attic insulated by Best Homes. Chris and his crew were professional and very efficient with their work. They insulated my attic within a few hours and left my house cleaner than it was before they got there. I wouldn't want the job done by anyone else."
+2
Serving South Windham, 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 South Windham, CT and surrounding areas
Approved
In business since 2003
Free estimates
Emergency services offered
"Perfect wall LLC service was amazing! They went over the job with me and explained everything and taught me a thing or 2 about insulation. After the job I went to look at the results and it was exactly how he explained it! They use measuring templates you can see the actual depth of the insulation in all parts of the attic which was awesome. The vent out the exterior wall was so perfect I couldn?t even find it unless I really looked. Everything came out perfect they took the time to clean up very well also which my wife was very happy about! 10/10 would use again."
+1
Serving South Windham, CT and surrounding areas
Approved
In business since 2016
Free estimates
Warranties offered
"Great job on basement insulation."
+5
Serving South Windham, CT and surrounding areas
Approved
In business since 1987
Free estimates
Warranties offered
"I really liked CT Basement systems. The sales rep walked me through the process of the basement SaniDry I had installed. When the installer came it turned out that I didn’t need all of the duct work and I was able to save a few hundred bucks. The installer was very professional, neat and helpful . I definitely will hire this company again. Customer service even followed up with me a few days later and had to remind me to register the system (good thing because I had forgotten)."
+13
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