4.5 
214 *The Angi rating for Insulation Service companies in White Oak, 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 White Oak, 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 March 30, 2026
Serving White Oak, 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 White Oak, 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 White Oak, 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 White Oak, 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 White Oak, 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 White Oak, 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 White Oak, 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 White Oak, 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 White Oak, MD and surrounding areas
Approved
In business since 2004
Free estimates
Credit card accepted
"Window & roof insulation quick, easy, & affordable!"
+77
Serving White Oak, MD and surrounding areas
Approved
In business since 2010
Free estimates
Emergency services offered
"It was a pleasure again working with Yosuary Diaz and his team on our unfinished basement renovation. We hired them before for whole house interior painting. I would definitely hire him again for other home renovations. Him and his crew are great and are very skilled at what they do. Diaz was not the cheapest, but also not the most expensive contractor, but overall, well worth it! We had our entire basement gutted out and rebuilt. Diaz and his team rebuilt everything from the sub-flooring, new walls, and plumbing...and other major infrastructure that is not always thought of. We love our new basement with a complete bathroom! We highly recommend Yosuary Diaz and his team if you have a major home project."
+62
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