4.8 
141 *The Angi rating for Insulation Service companies in Hillandale, 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 Hillandale, 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 05, 2026
Serving Hillandale, 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 Hillandale, MD and surrounding areas
Approved
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 Hillandale, MD and surrounding areas
Approved
In business since 2020
Free estimates
Warranties offered
"Great! Job was complete .... removal of existing 50+ year old insulation, air sealing attic, baffle installation, installed 18 inches new fiberglass blown insulation, and new whole-house fan. Job started and completed as proposed. Crew on-time, quietly performed their work, and left spaces clean when done. Definitely worth the cost as noticeable improvement in second floor temperature and humidity readings."
+1
Serving Hillandale, 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 Hillandale, 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 Hillandale, MD and surrounding areas
Approved
In business since 2002
Free estimates
Warranties offered
"The company did an assessment that we did not need as much insulation as we thought. The gave us a better approach which was cheaper and more efficient."
+93
Serving Hillandale, MD and surrounding areas
Approved
Super Service Award Winner
In business since 2021
Free estimates
Credit card accepted
"They replaced our insulation while we were redoing the roof."
+5
Serving Hillandale, MD and surrounding areas
Approved
In business since 2009
Free estimates
Warranties offered
"Ducts were sealed quite dramatically from the graph they provided. I am not seeing much savings on heating as I expected."
+16
Serving Hillandale, MD and surrounding areas
Approved
In business since 2004
Free estimates
Credit card accepted
"Window & roof insulation quick, easy, & affordable!"
+77
Serving Hillandale, MD and surrounding areas
Approved
In business since 1974
Free estimates
Warranties offered
"The service was great! Dominic, the owner, was knowledgeable and the crew of guys who replaced the roof did a fantastic job. Highly recommend!"
+19
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