4.7 
250 *The Angi rating for Drywall Insulation companies in Derby, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Drywall Insulation needs.
*The HomeAdvisor rating for Drywall Insulation companies in Derby, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Drywall Insulation needs.
Last update on May 15, 2026
Serving Derby, CT and surrounding areas
Approved
In business since 2009
Free estimates
Warranties offered
"the insulation they recommended saved me about 5000kw a year. the amount of money i am saving is far more the insulation payment on my Eversource bill. No money cost to me out of pocket and my electric bill dropped quite a bit. best move i ever did."
+1
Serving Derby, CT and surrounding areas
Approved
In business since 2009
Free estimates
Credit card accepted
"My experience with everyone was excellent. It started with an energy assessment followed up with spray foam insulation throughout my home. Good customer service and follow-up. All was explained thoroughly throughout the process and they welcomed my questions. I highly recommend this service."
+15
Serving Derby, CT and surrounding areas
Approved
In business since 2015
Free estimates
Warranties offered
"The crew worked quickly and efficiently to replace and upgrade the fiberglass batts in our basement and crawl space. I’m pleased with the outcome. (I put in even more wire supports afterwards — to secure the insulation between the joists — but that’s just my OCD.) It was a relatively small job for this company and I thought the cost was fair."
+21
Serving Derby, CT and surrounding areas
Approved
Super Service Award Winner
In business since 2020
Free estimates
Warranties offered
"Very professional, great service, cleaned up perfectly, extremely honest did not blow insulation into walls that it was not needed and lowered the cost we are very satisfied."
+1
Serving Derby, CT and surrounding areas
Approved
In business since 2006
Free estimates
Emergency services offered
"Fantastic. Responded to my request and provided quote quickly. Work was exceptional. Workmen were friendly, professional and repaired my insulation perfectly. Couldn't be happier."
+33
Serving Derby, CT and surrounding areas
Approved
In business since 2004
Free estimates
Emergency services offered
"Home Genius Exterior just completed phenomenal work at my property!! Windows and insulation done. â Top notch service from the consultation, to the schedule work, the start of the tear down, the installing and the final clean up. Highly recommend this company for your home service. Thank you for the hard work and service!"
Serving Derby, CT and surrounding areas
Approved
In business since 2003
Free estimates
Emergency services offered
"Perfect wall LLC service was amazing! They went over the job with me and explained everything and taught me a thing or 2 about insulation. After the job I went to look at the results and it was exactly how he explained it! They use measuring templates you can see the actual depth of the insulation in all parts of the attic which was awesome. The vent out the exterior wall was so perfect I couldn?t even find it unless I really looked. Everything came out perfect they took the time to clean up very well also which my wife was very happy about! 10/10 would use again."
+1
Serving Derby, CT and surrounding areas
Approved
In business since 2018
Free estimates
Emergency services offered
"Professional and affordable company. Will be using them again!!"
+1801
Serving Derby, CT and surrounding areas
Approved
In business since 2015
Free estimates
Emergency services offered
"Arrived on time. Spent 2 1/2 hours doing preparation to protect our home prior to start to spray foam. Quality of the insulation installation is top notch. Very professional and respectful. I could not be happier with the final project!"
+26
Serving Derby, CT and surrounding areas
Approved
In business since 2001
Free estimates
Credit card accepted
"I liked that the first questions we were asked was "Have you had a home energy audit done? Did you know you can get a rebate on your insulation project?" Before even knowing the scope of our project, they were looking to help make it more affordable for us."
From average costs to expert advice, get all the answers you need to get your job done.
How much does it cost to insulate a wall? This guide breaks down the associated costs and variables to consider when setting your project budget.
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.
How much does it cost to insulate a garage? Discover insulation options, prices, and expected and unexpected circumstances that affect the project cost.
Learning how to insulate plaster walls can help improve your home's energy efficiency. However, there are crucial cautions to consider before attempting.
Thick gaps and extra joint compound can alter the look of drywall. So, should drywall be butt up against a wall? Review this guide for seamless installation.
We’ll walk you through how to install spray foam insulation in your home—and when it makes sense to call in a pro.
