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Top-Rated Insulation pros in Saint Johnsbury - Updated Nov 2026

Avatar for Performance Spray Foam
Performance Spray Foam
4.9(
8
)
Spray Foam Insulation - InstallBlown-In Insulation - Install or Upgrade

Serving Saint Johnsbury, VT and surrounding areas

Approved

In business since 2022

Free estimates

Small jobs welcome

"The work they performed was beyond excellent! They were clean and respectful and worked continuously till the job was done. Can't wait to see what we will be saving on heat. Thanks so much Paul & crew!"
My jobs
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Response time1 day
34 neighbors recently requested a quote
Recommended by37%of homeowners
Avatar for CCF Spray Foam & Insulation LLC
CCF Spray Foam & Insulation LLC
5.0(
1
)
Spray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Saint Johnsbury, VT and surrounding areas

Approved

Free estimates

Credit card accepted

Offers commercial services

"I couldn’t be happier with the service I received! From the very beginning, the team was responsive, friendly, and great about following through. Scheduling was convenient, they arrived right on time, and the spray foam insulation work under my lake cabin was completed promptly and professionally. Chris was especially friendly and a pleasure to work with. Their pricing was competitive, and the entire experience was excellent from start to finish. I highly recommend them to anyone looking for quality spray foam insulation work. It’s refreshing to work with a company that delivers on its promises!"
8 neighbors recently requested a quote
Avatar for NEK Spray Foam Company
NEK Spray Foam Company
3.9(
9
)
Blown-In Insulation - Install or UpgradeInjection Insulation - InstallSpray Foam Insulation - Install

Serving Saint Johnsbury, VT and surrounding areas

In business since 2016

"Very professional, very efficient. They covered everything in the room where they had access to the attic. Cleaned up after the job. They put some extra insulation in and didn't charge extra. Stuck to the original estimate."
Response time2 days
Recommended by100%of homeowners
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 Saint Johnsbury, VT and surrounding areas

In business since 2005

Free estimates

Emergency services offered

"Vista has come to our house, especially a particular gentleman. Really knowledgeable, very professional. They do several different things. I have had them out to do estimates on gutters. We have not hired them for anything. To give you an idea, when they've come out I was very happy to open the door and see it was the same guy that has come several times to do several things. I interview several people. Not only did he come, and it's a little confusing to me because it has to do with ventilation and insulation, and excuse my language but there is a whole freaking science to this thing, but the owner actually came out. Not only did they keep in communication by computer, the owner actually came out and reinforced the whole education and what needs to be done. I was really thrilled with that. I thought that was beyond the call of duty. I am sorry I was not able to go with them, but I would certainly say as far as customer service relationship, excellent. The information was excellent. Not bothered by the fact that he had to come out more than one time for the same kind of information. I've never had the opportunity to hire them. But I've never been disappointed. They will take the time, they will talk to you, they will educate you, and they will actually give you the best price they can possibly give you. I got educated so that when my  husband came home I could explain to him what is going on. I can't rate their work, but as far as their generosity of time and caring, it's off the charts. I don't know about price because this is a whole new area to me. They were amazing. I have to tell you I have had them out several times as I said, it's Vista Home Improvements so they do several things, but I feel kind of bad that I am yet to hire them. I am trying to think exactly where Vista is out of, but for the owner to com about to your house. We're talking about a wrap around attic. We are talking about getting on your hands and knees and crawling around."
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+41

Recommended by87%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 Saint Johnsbury, 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."
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+2

Recommended by65%of homeowners
Northern Insulation
5.0(
1
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+1 more

Serving Saint Johnsbury, VT and surrounding areas

In business since 2011

Free estimates

Offers commercial services

We are a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 10 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

Recommended by100%of homeowners
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Insulation FAQs, answered by experts

The average cost to install insulation is around $1,800, but you could pay anywhere between $500 and $4,500, depending on various factors. Some of the things that have a significant influence on your pricing include the following:

  • Size of the area 

  • Type and R-value of the insulation 

  • Whether your space is finished or unfinished

  • Accessibility of the area

  • Your geographical location

  • Amount of site preparation, especially for blown-in insulation

  • Whether or not you need old insulation removed

Minimal maintenance is required, though regular inspections to ensure insulation hasn't shifted or deteriorated can improve performance over time.

Chimney liners often benefit from insulation, though it is not always required. Insulation helps improve the liner's efficiency by keeping flue gasses hotter, which enhances draft and reduces creosote buildup. It also prevents condensation, which can lead to corrosion. Insulation is important for chimneys on exterior walls or in colder climates. Some building codes may require insulation, so checking local regulations is essential.

Exposed ductwork can sweat just like ductwork placed behind walls, sometimes even more so. Ductwork sweats—like a cold drink on a hot day—because of a temperature imbalance between the air in the duct and the air in the room. In a crawl space or wall, this temperature can equalize faster due to the small space but in lofts and open rooms, that wouldn’t happen as quickly. Many people insulate their ducts for this reason.

If you need to insulate behind finished walls, the best option will likely be to have an insulation professional install blown-in insulation. The installation requires small holes cut in your wall, after which the installer can blow loose-fill insulation into the void. After the installation, you’ll have minor drywall patching, which shouldn’t cost more than $100. Compared to ripping down the existing drywall, using a different type of insulation, and replacing and finishing the drywall, this should save you hundreds or even thousands, depending on the size of the room you’re insulating.

The Saint Johnsbury, VT homeowners’ guide to insulation services

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