4.5 
66 *The Angi rating for Insulation Service companies in Stratham, 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 Stratham, 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 February 12, 2026
Serving Stratham, 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 Stratham, NH and surrounding areas
Approved
In business since 1999
Free estimates
Emergency services offered
"i would recommed Insul-King to anyone. They did a great job. Would use them again"
Serving Stratham, NH and surrounding areas
Approved
In business since 2018
Free estimates
Warranties offered
"Quick turnaround from estimate to getting the work done."
+9
Serving Stratham, 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 Stratham, NH and surrounding areas
Approved
Super Service Award Winner
In business since 2000
Free estimates
Warranties offered
"Warren did foam insulation to a gruesome crawl space and also installed a dehumidifier/fan to dry it up. He was very responsive, answered all my questions, was extremely polite, stayed under budget, excellent work done, and cleaned up every day. I m very pleased with all the work he did. I will hire him for more jobs. I highly recommend N.E.E. Construction and Spray foam."
+16
Serving Stratham, 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 Stratham, 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 Stratham, NH and surrounding areas
Approved
In business since 2013
Free estimates
Offers commercial services
"Honest, great service, excellent work."
Serving Stratham, NH and surrounding areas
Approved
In business since 2025
Free estimates
Small jobs welcome
"Job was done well and on budget"
Serving Stratham, NH and surrounding areas
Approved
In business since 2018
Warranties offered
Small jobs welcome
"Everything worked out well and I was completely satisfied. I would certainly use them again."
+47
From average costs to expert advice, get all the answers you need to get your job done.
New insulation can make your home more comfortable and boost energy efficiency. Use this insulation cost guide to get an accurate estimate for the installation.
Insulating your attic can massively improve your home’s efficiency and reduce electric bills. Use this guide to find out what attic insulation will cost you.
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.
What is insulation? This behind-the-scenes home fixture will maintain comfortable temperatures in your home no matter the season. It’ll lower energy bills, to boot.
Use this DIY checklist for insulation repair to make your living space more comfortable and reduce your heating and cooling bills in the process.
There are 10 types of insulation you can use for your home. Read this guide to discover which insulation types could be best for the job.
