4.1 
139 *The Angi rating for Insulation Service companies in Frederick, MD 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 Frederick, MD 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 15, 2026
Serving Frederick, MD and surrounding areas
Approved
In business since 2023
Free estimates
Warranties offered
"Very prompt. Gave us a great price and did a wonderful job installing insulation in a tight area. Would definitely hire him again."
Serving Frederick, MD and surrounding areas
Approved
In business since 2022
Free estimates
Credit card accepted
"I had a wonderful experience with Founders Insulation. They were extremely easy to work with. It was easy to schedule an appointment, the gentleman who came out was knowledgeable and polite, and I felt that I received good information and they did not try to sell me something I did not need. Their quote was excellent. The work was scheduled and completed quickly. The installation team was courtesy, thorough, and knew their stuff. They were respectful of my home and went above and beyond. I highly recommend this company."
+11
Serving Frederick, MD 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 Frederick, MD and surrounding areas
Approved
In business since 2020
Free estimates
Warranties offered
"I had several options to pursue in finding a remedy for my hot attic. After meeting with the insulation consultant who was extremely knowledgeable, patient, and provided detailed explanations of how to insulate I knew proceeding with the job was the right decision. My attic is noticeably cooler and I highly recommend"
+76
Serving Frederick, MD and surrounding areas
Approved
In business since 2009
Free estimates
Credit card accepted
"Our first interaction with Atlas was with Shannon. As knowledgeable and personable as one could hope for. She clearly explained cost effective measures to better insulate our house. We opted for sealing and insulating our attic and weather stripping a number of doors. We were very pleased with the workmanship and the energy savings they produced. They also helped us get a PEPCO credit which reduced the overall cost of the job. A winner!"
+11
Serving Frederick, MD and surrounding areas
Approved
In business since 2000
Free estimates
Emergency services offered
"On time, courteous, clean and efficient. Foamed and drywalled the garage efficiently, and cleaned up well after the job. Provided advise on issues seen during insulation preparation. Great service."
+36
Serving Frederick, MD and surrounding areas
Approved
In business since 2004
Free estimates
Credit card accepted
"Window & roof insulation quick, easy, & affordable!"
+77
Serving Frederick, MD and surrounding areas
Approved
In business since 1974
Free estimates
Warranties offered
"We had a great experience with ROI Construction sales representative David Burke. David was very knowledgeable about ROI's porducts and services. We look forward to getting our attic insulation project completed and will provide a more thorough review at that time. Thanks, Tim"
+19
Serving Frederick, MD and surrounding areas
Approved (Corporate)
Free estimates
Offers commercial services
Home contractors
Serving Frederick, MD and surrounding areas
In business since 2005
Free estimates
Credit card accepted
"Accurate insulation came promptly at the specified time. They were thorough and so professional. The quality of work is fantastic. Couldn’t be more satisfied. This is the second time that we’ve used them and will not hesitate to use them again shall the need arises."
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.
