3.6 
90 *The Angi rating for Insulation Service companies in Mount Airy, 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 Mount Airy, 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 Mount Airy, MD and surrounding areas
Approved
In business since 2022
Free estimates
Credit card accepted
"Founders Insulation did a very good job on installing insulation in ceilings! They were careful, courteous and cleaned up."
+11
Serving Mount Airy, 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 Mount Airy, 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 Mount Airy, 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 Mount Airy, 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 Mount Airy, MD and surrounding areas
Approved
In business since 2004
Free estimates
Credit card accepted
"Window & roof insulation quick, easy, & affordable!"
+77
Serving Mount Airy, MD and surrounding areas
Approved
In business since 1974
Free estimates
Warranties offered
"Great! Dom and his team were efficient, knowledgeable, polite, and they not only did a great job on the roof, they cleaned up wonderfully!"
+19
Serving Mount Airy, MD and surrounding areas
Approved
In business since 1999
Free estimates
Emergency services offered
"B.Marshall Home Improvements did an excellent job cleaning off all the moss and mold growing on our roof. They also sealed the roof . They also painted the vent pipes to match the roof without asking and no extra charge. This a father son local business who are professional. I would hire again ."
Serving Mount Airy, MD and surrounding areas
In business since 2009
Free estimates
Warranties offered
"Highly recommend. Exceptional and professional service from their contractors and most especially by Nolan Walker (Performance Consultant). Nolan showed photos taken of my home's ductwork and insulation and provided a list of options and the cost of each project so that I could make a well informed choice of which projects to pursue. He took his time and was honest and understanding - not aggressive like other companies I have dealt with. His test-out and follow-up appointment was just as thorough. It was a pleasure working with him."
+16
Serving Mount Airy, MD and surrounding areas
In business since 2019
Free estimates
Credit card accepted
"Excellent workmanship!!!! I highly recommend them for any insulation project. Very professional and respectful. Answer all my questions and took time to make sure I understood. Superior company."
+45
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