4.5 
104 *The Angi rating for Insulation Service companies in Derry, 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 Derry, 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 May 10, 2026
Serving Derry, 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 Derry, 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 Derry, 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 Derry, 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 Derry, NH and surrounding areas
Approved
In business since 1973
Free estimates
Credit card accepted
"It was an absolute pleasure having Roland do my insulation job. He called me the very same day I submitted my inquiry and came to my home that afternoon and got right to work. It made me feel very comfortable to know that my job was being done by an experienced, efficient and knowledgeable insulation installer. He also was very polite and friendly. I highly recommend that anyone in need of insulation contact Roland Martin of Sav-on Insulation. He will do a fantastic job for you."
Serving Derry, NH and surrounding areas
Approved
Super Service Award Winner
In business since 2000
Free estimates
Warranties offered
"The work that was done installing spray foam underneath my four season room was fantastic! The owner and worker were absolutely fantastic. Great quality workmanship and very reasonably priced! I will definitely call this company for future work! Very professional, friendly, and clean. No messes were left behind. I already referred this company to friends."
+16
Serving Derry, NH and surrounding areas
Approved
Free estimates
Emergency services offered
Warranties offered
"They did the job as defined in the scope. I have not been able to test its full function until we have a heavy rain storm . It is designed to keep the basement dry under heavy rain or tropical down pours.. I was very pleased that they were on time and very communicative throughout the engagement."
+2
Serving Derry, NH and surrounding areas
Approved
In business since 2025
Free estimates
Small jobs welcome
"Job was done well and on budget"
Serving Derry, NH and surrounding areas
Approved
In business since 2014
Free estimates
Warranties offered
"Matthew @ Freedom Framinging was thorough, professional and tidy. Would definitely use him again."
+34
Serving Derry, 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
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