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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon32
    Verified insulation services reviews

Top-Rated Insulation pros in Plymouth - Updated Nov 2026

Avatar for Good Life Energy Savers LLC
Good Life Energy Savers LLC
4.8(
106
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInsulation - Install or Upgrade

Serving Plymouth, CT and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

"the insulation they recommended saved me about 5000kw a year. the amount of money i am saving is far more the insulation payment on my Eversource bill. No money cost to me out of pocket and my electric bill dropped quite a bit. best move i ever did."
Spray foam application
Spray foam in attic
Good Life on the Job
Injecting Foam in Side Walls
Replacing Siding

+1

Response time1 day
3 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Good Life Energy Savers, LLC
Good Life Energy Savers, LLC
4.6(
77
)
Blown-In Insulation - Install or Upgrade

Serving Plymouth, CT and surrounding areas

Approved

In business since 2009

Free estimates

Credit card accepted

"Easy company to work with. In our large crawl space a few spots were missed. One call and the crew was back in 2 days to do touch up. Note that this was difficult work-lying on your back spraying above you with respiratory & eye protection so to miss a few spots might be expected as well as how insulation expands. They did great job removing old batt insulation Filled w mouse poop"
 Tripolymer
 Tripolymer installation
 Spray Foam Installation
 Spray foam insulation projects
Installaton

+15

Response time1 day
20 neighbors recently requested a quote
Recommended by98%of homeowners
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 Plymouth, CT and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"The team was very patient and did a great job on the project. I had a few unexpected issues pop up during insulation of my basement but they took care of it without any fuss. Lomont is a pleasure to work with and communicated well throughout the project."
Insulation Project
Insulation Project
Painting - Exterior Project
Insulation Project
Insulation Project

+33

Response time1 day
Response rate100%
4 neighbors recently requested a quote
Avatar for Koala Insulation of Southern Connecticut
Koala Insulation of Southern Connecticut
5.0(
27
)
Spray Foam Insulation - Install

Serving Plymouth, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Warranties offered

"I was extremely impressed with the work from Koala insulation. I live in an older house and was having major energy drain issues and my house has always been cold. After the insulation, I could immediately feel the difference, and for the first time, I didn’t need to keep the heat pump running 24x7 to keep the temperature. I can wait to see the savings as I think this is going to cut my bills by a large amount."
Attic Spray Foam
Crawl Space SPF
After Spray Foam
Before Spray Foam
Before Spray Foam

+20

Response time1 day
Response rate98%
30 neighbors recently requested a quote
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.9(
530
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or Upgrade

Serving Plymouth, CT and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"I was impressed with the quality and skill of the crew, they knew exactly what to do and the result was excellent. I was extremely impressed with the quality of the insulation, and feel much more comfortable with my home! The foreman was excellent, very skilled, and the turn out was outstanding!"
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing

+44

Recommended by69%of homeowners
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 Plymouth, 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."
Spray Foam Insulation
Spray Foam Insulation
Spray Foam Insulation
Spray Foam Insulation
Open Cell Spray Foam

+5

Response time1 day
132 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Ecoorganic USA LLC
Ecoorganic USA LLC
5.0(
8
)
Spray Foam Insulation - Install

Serving Plymouth, CT and surrounding areas

Approved

In business since 2015

Free estimates

Small jobs welcome

"Ecofoam insulated my attic with closed-cell spray foam and the results came out great. The space feels completely sealed and much more comfortable already. Sevi and the team were very professional, easy to work with, and kept me updated throughout the whole process. I would highly recommend EcoFoam for anyone looking for quality insulation work."
Completed Spray Foam
Exterior of Home
Closed Cell
Exterior Batt
Interior Fiberglass

+29

Response time4 hrs
Response rate100%
13 neighbors recently requested a quote
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.9(
387
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Plymouth, CT and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"I was impressed with the quality and skill of the crew, they knew exactly what to do and the result was excellent. I was extremely impressed with the quality of the insulation, and feel much more comfortable with my home! The foreman was excellent, very skilled, and the turn out was outstanding!"
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing
Gutters

+42

1167 neighbors recently requested a quote
Recommended by96%of homeowners
...
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Insulation FAQs, answered by experts

While a few icicles on your roof are standard, a large accumulation can be a sign of a bigger problem, such as poor insulation. This is particularly true if you are also dealing with ice dams. If you have numerous large icicles, it is recommended to have a roofing contractor diagnose potential insulation issues and create a plan to solve them.

The primary downside of radiant barriers is their limited effectiveness in cold climates. They are designed to reflect radiant heat, making them less beneficial in cooler conditions where heat retention is more important. 

Radiant barriers require proper installation to maximize effectiveness. Incorrect placement can lead to minimal benefits. They also do not provide insulation, meaning they should be used in conjunction with traditional insulation for optimal energy efficiency. 

Canned spray foam has an R-value of R-3.7 per inch. However, it’s not great for use as insulation. Also known as single-component spray foam, it doesn’t expand as much as two-part types that work for insulating the whole house. Save the canned foam for gaps around doors and windows.

Vapor barriers in attics are a bit outdated and most areas no longer recommend them for attic spaces. For vented attics, the best method is usually to install drywall and cover it with latex paint before attaching insulation fiberglass, cellulose, or foam insulation. When renovating an attic to use as a living space, a contractor can guide you on the best way to cover insulation.

Also known as sound-dampening blankets, acoustic blankets reduce echo in a room. They come in different thicknesses and materials, and they can be nailed or glued to walls.

The Plymouth, CT homeowners’ guide to insulation services

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