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TRUSTED BY WILLIMANTIC, CT HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon25
    Verified insulation services reviews

Verified Reviews for Insulation Service pros in Willimantic, CT

*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

Top-Rated Insulation pros in Willimantic - Updated Nov 2026

Avatar for AWC Energy
AWC Energy
5.0(
18
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInjection Insulation - Install+2 more

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."
Insulation Project
Insulation Project
Painting - Exterior Project
Insulation Project
Insulation Project

+33

Response time1 day
Response rate100%
4 neighbors recently requested a quote
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Avatar for McMahon Spray Foam, LLC
McMahon Spray Foam, LLC
4.6(
32
)
Spray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Willimantic, 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."
Spray Foam Insulation
Spray Foam Insulation
Spray Foam Insulation
Spray Foam Insulation
Open Cell Spray Foam

+5

Response time1 day
142 neighbors recently requested a quote
Recommended by90%of homeowners
Request Quote
Avatar for Koala Insulation of Eastern CT
Koala Insulation of Eastern CT
4.7(
13
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeSpray Foam Insulation - Install

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"
Batt Rolled in Insulation
Spray Foam Insulation
Blown In Insulation
Vernon Crawl Space
Vernon Crawl Space

+21

Response time1 day
5 neighbors recently requested a quote
Recommended by100%of homeowners
Request Quote
Avatar for Eco Energy Solutions, LLC
Eco Energy Solutions, LLC
3.5(
25
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - Install

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."
Before and After
Insulating Knee Wall
Before
Moldy Insulation
Before

+22

Response time1 day
Recommended by92%of homeowners
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Avatar for Perfect Wall LLC
Perfect Wall LLC
4.7(
13
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+1 more

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"
rockwool
fiberglass
spray foam
open cell foam
fiberglass

+1

Response time10 hrs
Response rate95%
Recommended by69%of homeowners
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Avatar for Fogarty's Home Services
Fogarty's Home Services
5.0(
4
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade+1 more

Serving Willimantic, CT and surrounding areas

Approved

In business since 2016

Free estimates

Warranties offered

"Great job on basement insulation."
The finished basement!
We now are a National Radon Defense authorized dealer!
Our staff at a recent trade event in Hartford, CT
Some of our production teams!
Before and After, Total Basement Finishing

+5

Response time10 hrs
Response rate100%
13 neighbors recently requested a quote
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Avatar for Connecticut Basement Systems, Inc.
Connecticut Basement Systems, Inc.
4.3(
589
)
Blown-In Insulation - Install or Upgrade

Serving Willimantic, CT and surrounding areas

Approved

In business since 1987

Free estimates

Warranties offered

"Chuck Stofko was very informative. Was patient in answering all my questions. Spent along time with me reviewing the process and the steps needed to waterproof my basment. I highly recommend him."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+12

176 neighbors recently requested a quote
Recommended by90%of homeowners
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Avatar for EnLight.Energy
EnLight.Energy
3.5(
4
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or Upgrade

Serving Willimantic, CT and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"They were very thorough and professional. Very personable."
Multi-Layer Insulation
Cellulose Insulation Job
Solar Install
Solar Installation
Solar Fan

+4

Response time2 days
18 neighbors recently requested a quote
Recommended by66%of homeowners
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Sonart Construction Corp.
2.3(
7
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+1 more

Serving Willimantic, CT and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

"I recently had my shingle roof replaced and I?m very happy with the results. The team was professional, punctual, and completed the job efficiently. The quality of the work is excellent, and the new roof looks great. They kept the work area clean and communicated well throughout the process. I would definitely recommend them to anyone needing a roof replacement."
Request Quote
Showing 1-10 of 44
Insulation FAQs, answered by experts

Garden blankets and frost cloths are the best things to use to protect trees and plants from frost. They are made from polypropylene fabric, which is lightweight, breathable, and dries fast. If you can’t get garden blankets or frost cloths before the freeze, you should use lightweight blankets, sheets, or towels.

No, 55 degrees Fahrenheit is not too cold for a house, as it’s a temperature that will keep your pipes and appliances from freezing. Well-insulated homes can even go to 50 degrees, but check with an HVAC pro before opting for such a low temperature. Stick to 55 degrees to be on the safe side.

Modern windows provide enhanced UV protection, improved heat retention, and cooling efficiency, contributing to overall household energy savings.

If you have blown-in insulation, using an insulation vacuum will quickly and easily suck up all the insulation. Many come with built-in HEPA filters for added safety. While some people suggest breaking up large batts and feeding them into the vacuum, this can expose you to more fiberglass fibers. With batts and rolls, carefully removing them and placing them into garbage bags is a better process.

You should not use spray foam insulation in several specific areas. Avoid applying it in spaces exposed to high temperatures, such as near electrical boxes or recessed lighting, unless the foam is specifically rated for such use. Applying foam near electrical boxes can damage the wiring, and using it too close to lightboxes or recessed lights creates a potential fire hazard. Additionally, do not use spray foam in areas prone to shifting or movement, as this can lead to cracks and gaps in the insulation. Finally, open-cell foam is unsuitable for use below ground or in areas exposed to moisture because it can absorb water, which compromises its insulating effectiveness.

The Willimantic, CT homeowners’ guide to insulation services

From average costs to expert advice, get all the answers you need to get your job done.

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