4.4 
52 *The Angi rating for Insulation Service companies in Dover, DE 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 Dover, DE 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 December 18, 2025
Serving Dover, DE and surrounding areas
Approved
In business since 2006
Free estimates
Small jobs welcome
"Handyman Insulation was very thorough and knowledgeable about the best way to insulate our house. The team was very kind and promptly answered all questions. They cleaned up thoroughly before leaving. Overall great experience and would gladly recommend them!"
Serving Dover, DE and surrounding areas
Approved
In business since 2006
Free estimates
Small jobs welcome
"Work to insulate bonus room was done on time and workmanship was very good."
+7
Serving Dover, DE and surrounding areas
Approved
Super Service Award Winner
In business since 2019
Free estimates
Emergency services offered
"These guys took time from their busy schedule came to my residence on Easter Sunday to give me a price on repairing insulation mess left by previous contractor. They arrived next day and completed the insulation work and did an excellent job at an excellent price. My thanks to Sagittarius air seal thanks again, Michael Duffy."
+38
Serving Dover, DE and surrounding areas
Approved
In business since 2021
Free estimates
Emergency services offered
"Did a great job on the insulation however they left a hole in the ceiling when they dropped something on the attic floor. Not a big deal but they need to be careful. Overall, amazing work they do all kinds of insulation and they also install radiant barriers on roof joists. They are reasonably priced and the crew is super friendly, pleasure to work with."
+6
Serving Dover, DE and surrounding areas
Approved (Corporate)
In business since 2023
Free estimates
Warranties offered
"We are extremely satisfied with the whole process of our house being insulated. First we had the walls done, and then a couple weeks later we had our attic insulated. The crew were so nice, friendly, and knowledgeable. We are very satisfied with everything. Thank you, everyone."
Serving Dover, DE and surrounding areas
Approved
Super Service Award Winner
In business since 2005
Free estimates
Emergency services offered
"We have worked with many different contractors over the years and have been turned off of construction in general. None of our previous projects have ever gone smooth. The opposite can be said about home genius Exteriors! Joe was in communication with us throughout the project and made sure any issues and concerns we had were addressed immediately. This has been a really good experience and I highly recommend home genius Exteriors."
+82
Serving Dover, DE and surrounding areas
Approved (Corporate)
In business since 1928
Free estimates
Credit card accepted
"Did not see the temperature difference I thought I would."
Serving Dover, DE and surrounding areas
Approved
In business since 2010
Free estimates
Emergency services offered
"They did an incredible job. Took out all the blown in insulation and spray foamed whole attic. Making it a useable space for storage and helping to regulate the temperature in our home. Will be calling on them for future projects."
+137
Serving Dover, DE and surrounding areas
In business since 2019
Free estimates
Offers commercial services
"I live in Dover, Delaware. I had blown fiberglass insulation in my attic. They did an amazing job. I would hire them again!"
Serving Dover, DE and surrounding areas
In business since 1987
Free estimates
Emergency services offered
"I'll start off by saying that Right Way originally installed an interior french drain for us in 2003. Soon after we had our basement finished. From that time on we never had to worry about a flooded basement. It was a big job and they were awesome! When our sump pump started making noises last week, I called in the morning and Al came out that day. He fixed our issue then had another installer came back out the following day to install a new backup system. I would highly recommended these guys!
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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.
