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Best insulation pros near Londonderry, VT

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Top-Rated Insulation pros in Londonderry - Updated Nov 2026

Avatar for Correct Energy Spray Foam
Correct Energy Spray Foam
4.6(
20
)
Spray Foam Insulation - InstallBlown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade+2 more

Serving Londonderry, VT and surrounding areas

Approved

In business since 2007

Emergency services offered

Warranties offered

"What an absolute DREAM! Correct Energy is an incredible company. Knowledge, professional and efficient! I contacted a few insulation companies but the proposed methods were not through. Correct Energy and especially Ray’s knowledge and experience were above and beyond. CE came out to assess and spent a generous amt of time explaining EVERYTHING. CE came when they said they would. The crew was professional and spent a few days here. They left everything immaculate. My place is old, built in the 1940’s so many challenges came up that they handled like absolute pro’s. Their work has and will continue to save so much on energy, the difference of before and after is immediate and drastic. I can’t wait for them to come back and do my basement next! I can't say enough about this company. Pros work here!!! Hire them!!! You will not be disappointed.."
Response time3 days
Response rate100%
43 neighbors recently requested a quote
Avatar for Coastal Spray Insulation LLC
Coastal Spray Insulation LLC
4.5(
24
)
Blown-In Insulation - Install or UpgradeInjection Insulation - InstallSpray Foam Insulation - Install

Serving Londonderry, VT and surrounding areas

Approved

In business since 2017

Free estimates

Small jobs welcome

"Mr Kenny was a very nice person to talk with. He said that since the western wall of my home is under a flat roof it is very difficult to service with blown-in insulation, i.e. holes would have to be made several feet apart in the outside walls. It would be cost-prohibitive as well as difficult. I declined and have abandoned the project."
Spray foam jobs
Spray foam jobs
Home in Palencia
Home in Palencia, St. Augustine, FL
RV Insulation

+7

Response time6 hrs
Recommended by100%of homeowners
Avatar for Horsth Plastering
Horsth Plastering
5.0(
1
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - Install

Serving Londonderry, VT and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

Horsth Plastering proudly serves Vermont and New Hampshire with expert plastering services tailored to residential and commercial needs. With years of hands-on experience, the company specializes in high-quality interior plaster finishes, including traditional plaster, veneer plaster, and patchwork repairs. Horsth Plastering is known for its attention to detail, reliable scheduling, and clean, efficient job sites. Whether it's new construction, remodeling, or restoring historic properties, the team delivers smooth, durable finishes that elevate any space. Their commitment to craftsmanship and customer satisfaction has earned them a strong reputation throughout the region. Fully insured and locally trusted, Horsth Plastering works closely with homeowners, contractors, and designers to ensure every project is completed on time and to exact specifications. From start to finish, Horsth Plastering brings precision and pride to every wall they touch.

Plaster
Plaster
Plaster
Plaster
Newburry, VT

+14

Response time5 hrs
7 neighbors recently requested a quote
Fitzpatrick Home Inspection
New to Angi
Batt, Rolled or Reflective Insulation - Install or Upgrade

Serving Londonderry, VT and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

Fitzpatrick Home Inspection is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business. I work with my son and we also do decks, floor installs ,floor repairs, water damage repair/replace, tile floors, back splashes and showers. \n

Avatar for Vista Home Improvement
Vista Home Improvement
4.3(
419
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Londonderry, VT and surrounding areas

In business since 2005

Free estimates

Emergency services offered

"Vista was on time to all appointments.  The job grew from a new roof, to insulating the roof over the cathedral ceiling and bringing a saggy sun room roof line up to code.  My husband did a great deal of research regarding products and applications.  He asked for their recommendations before stating what he thought should be done.  My husband was pleased with the feedback from Vista on the proper way to correct the roof line as well as the insulation alternatives for a cathedral ceiling.  Colors were selected and a date was given for installation.  
Installation went rather well.  Vista installed the wrong color drip edge.  My husband pointed out the error.  Vista stripped the material and reinstalled.  Luckily the shingles were not installed yet.  In our quote we asked for ice and water barrier over 100% of the roof.  He noticed it was only 2 courses up on the roof.  This was pointed out and the foreman quickly corrected the problem.  
The crew was very nice and courteous.  As with any construction work, we feel that we need to keep an eye on the progress, so I don't think the errors of the drip edge and ice/water barrier were a big deal.  But if my husband was not home, it would have been missed.  This was all miscommunication between their salesman, distribution house and construction manager.  Overall they did a great job."
Additional Photos
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+41

Recommended by87%of homeowners
Vermont Foam Insulation
3.1(
7
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+1 more

Serving Londonderry, VT and surrounding areas

In business since 2005

Free estimates

Credit card accepted

Vermont Foam Insulation offers the highest quality services and products. We are your local authorized open cell Icynene�� Dealer. We are also an approved installer of Demilec's HeatLok Soy��, a soy-based 2lb. closed cell foam and The Henry Company's Permax, a 1.8lb. closed cell foam. \n \nCheck us out online. \n \nRequest our information packet, and take a look! \n

 Floor System
 Commercial Work Metal Studs
 Old Stone Foundation with SPF/Plastic Membrane
 Timber Frame
 Cathedral Ceiling 1

+7

Response time2 days
Recommended by100%of homeowners
Avatar for Holmquist Building & Remodeling
Holmquist Building & Remodeling
4.3(
7
)
Injection Insulation - InstallSpray Foam Insulation - Install

Serving Londonderry, VT and surrounding areas

In business since 1995

Free estimates

Credit card accepted

With over 20 years of experience, we are the experts you need to take care of your home or business. We handle everything from insulation to remodels. We will treat your home as we would treat our own. Give Holmquist Building & Remodeling, a call today, we look forward to working with you!

Sampson Siding and deck
Sampson Siding and deck
Trex
Sampson Siding and deck
Sampson Siding and deck

+3

Response time2 days
Recommended by100%of homeowners
Avatar for American Home Shield – Home Warranty
American Home Shield – Home Warranty
3.5(
5,689
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Londonderry, VT 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."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+2

Recommended by65%of homeowners
Avatar for Fitzpatrick Home Inspection
Fitzpatrick Home Inspection
4.6(
27
)
Batt, Rolled or Reflective Insulation - Install or Upgrade

Serving Londonderry, VT and surrounding areas

In business since 2020

Free estimates

Small jobs welcome

"I hired this company tell help with an insulation project. Joe arrived when he said he was going to, he is an extremely hard worker, and the job was completed in a timely manner! 100% recommend. I plan to hire this company again in the Spring for a deck building project and I?m really looking forward to having Joe back. He is kind, reasonable and I have nothing but good to say about him and his work."
wanescoting
wall repair and paint
deck repair
deck repair
pressure washing

+88

Response time11 hrs
5 neighbors recently requested a quote
Recommended by72%of homeowners
Showing 1-10 of 20
Insulation FAQs, answered by experts

Yes, crawl space insulation is worth it if installed correctly. Installing insulation in your crawl space will improve the air quality, help stabilize your home's temperature, lower your energy bills, and prevent pests from entering your home. Though you’ll pay more to install insulation initially, the savings you get from installing insulation can help offset those initial costs over time.

The best way to reduce heat upstairs is to release it by opening a window. Hot air rises, and if you can create some airflow by opening a window upstairs and also one on a lower level, the hot air should be pushed out of the home. Remember that fans pointing out the window do a much better job of circulating air than fans pointing into the home.

Mold can grow on garage ceiling insulation, which is why it’s important to install a vapor barrier behind the insulation and keep the space cooled and heated as you would your living area. Doing so will more or less eliminate the risk of mold growing on your garage ceiling insulation. You can also install a self-draining dehumidifier to help remove moisture, or opt for a foam board insulation or spray foam insulation that won’t harbor moisture and mold.

It’s technically possible to install loose-fill cellulose insulation without a blower, but it’s much more time-consuming, tedious, and dangerous. You’ll need to wear the proper protective coverings to handle the cellulose after it’s been doused in boric acid; use a shovel when you can to transport the material from the bag into the wall cavity.

That said, if you purchase cellulose materials at a home improvement store, ask if they rent out blowers for free or at a discounted rate. In many cases, if you buy the material from the store, they’ll rent out the blower at no extra cost.

One of the clearest signs that your insulation isn’t working as well as it should be is a noticeable difference in temperature throughout your home. One room might feel icy while another is hot as Arizona—this indicates that some parts of your home are either retaining or losing heat more than others. Additionally, a sudden increase in your energy bills, evidence of pests or rodents, or evident water damage are other signals that warrant a thorough inspection of your insulation and potential replacement.

The Londonderry, VT homeowners’ guide to insulation services

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