4.4 
62 *The Angi rating for Insulation Service companies in Kensington, NH 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 Kensington, NH 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 November 24, 2025
Serving Kensington, NH and surrounding areas
Approved
In business since 2011
Free estimates
Emergency services offered
"Sean and Dave were super on this project. They got the project done on time, their communication was excellent, and they did a high quality job."
+39
Serving Kensington, NH and surrounding areas
Approved
In business since 2012
Free estimates
Credit card accepted
"The customer service was good. They showed up when they said they would, and completed the project early. However, they didn't do a great job paying attention to details when trimming the foam & cleaning up afterwards. I had to spend a few hours trimming foam they missed, so that drywall could go up without interference, and dealing with staples and foam on painted walls."
Serving Kensington, NH and surrounding areas
Approved
In business since 2022
Free estimates
Small jobs welcome
"Happy to work with this company, will definitely be reaching out again for any future insulation needs. Very professional and nice people."
+57
Serving Kensington, NH and surrounding areas
Approved
In business since 2018
Free estimates
Warranties offered
"William and his team did a terrific job to insulate my attic and basement rim joists with closed cell foam."
+9
Serving Kensington, NH and surrounding areas
Approved
In business since 2010
Free estimates
Emergency services offered
"GREAT JOB PRICE WAS GREAT AND A PRO JOB"
+5
Serving Kensington, NH and surrounding areas
Approved
In business since 2025
Free estimates
Credit card accepted
"I could not have been more pleased by the work and the professionalism and the cost and the results. ABI was the first company to respond to my request for bids on the project. They were at the house within days of the request and were knowledgeable about putting insulation over light fixtures embedded in the ceiling. The attic did not have access from within or outside the house and they problem-solved this in a way that was a great solution. They lay down mats so as not to dirty up the carpets and stairs and they wore gear to protect themselves from the insulation. MY house was cleaner when they left than when they arrived. All of the people working on the project were professional and knowledgeable and the cost was extremely reasonable. For the first time this winter, my house feels like it can hold the heat. Looking forward to this summer, because I'm betting it will also improve my air conditioning!"
Serving Kensington, NH and surrounding areas
Approved
Super Service Award Winner
In business since 2000
Free estimates
Warranties offered
"Courteous, knowledgeable and hard working. Communicated well through the whole project. Very pleased with the insulation and reconstructing of some of the skirting. They also did a really good job of cleaning up. Highly recommend!!!"
+16
Serving Kensington, NH and surrounding areas
Approved (Corporate)
In business since 1975
Free estimates
Credit card accepted
"Quality Insulation of Portsmouth did two jobs for me: They added blown in insulation to my attic last fall and installed gutters plus leaf guards this spring. Both jobs were excellently done at a reasonable cost. I would certainly recommend them and will likely use them again in the future."
Serving Kensington, NH and surrounding areas
Approved
In business since 2013
Free estimates
Offers commercial services
"Honest, great service, excellent work."
Serving Kensington, NH and surrounding areas
Approved
In business since 2025
Free estimates
Small jobs welcome
"Dustin and Mike did a great job for us! They came when they said they would, they were very professional start to finish and their price was more than fair."
From average costs to expert advice, get all the answers you need to get your job done.
Your home's ceiling insulation cost will depend on several factors, including the project size, the type of insulation you use, and the R-value.
Crawl space insulation costs vary by size, insulation type, and material. Read this guide to learn how much your crawl space insulation could cost.
Find out the average pipe insulation cost, including material and labor prices, plus tips to save money on your project.
Learn how to decide if your home needs dryer vent insulation to protect your vent from drafts and moisture that can make your energy usage less efficient. Poorly ventilated dryer vents also increase mold risks!
Removing old insulation may be necessary for upgrading your insulation. Keep reading to see if you should remove old insulation before adding new insulation.
Learning how to insulate plaster walls can help improve your home's energy efficiency. However, there are crucial cautions to consider before attempting.
