
Serving Knoxville, 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

*The Angi rating for Insulation Service companies in Knoxville, 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 Knoxville, 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 February 28, 2025

Serving Knoxville, 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 Knoxville, MD and surrounding areas
Approved
In business since 2020
Free estimates
Warranties offered
"The insulation was fast. They did a good job cleaning up. They quickly resolved a problem that occurred. The sales man Seth was super nice and took time to answer my questions. Ami from the office was very good at communicating with me throughout the process."





+76

Serving Knoxville, 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 Knoxville, 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 Knoxville, MD and surrounding areas
Approved
In business since 2004
Free estimates
Credit card accepted
"Window & roof insulation quick, easy, & affordable!"





+77
Serving Knoxville, MD and surrounding areas
In business since 2005
Free estimates
Credit card accepted
"We needed insulation applied only to the underside of the house at this time. The guy who came out to give an estimate was great. The guy that came out to do the spray job (I expected a team and got just one guy) was super nice. The spray foam would appear to be difficult to manage during application as some spots only have a skim of insulation while others seem to have 7 inches of it. The office..... trying to get any information from that office.... was a hassle way beyond my wildest nightmares. Getting the estimate took days, getting scheduled took days. They have only one person working to do all of the scheduling and she "is out of the office" during a whole heck of a lot of "our office hours are from...". Figuring out what I needed to know to pay online took pulling teeth. It was the best price I got and it will make a world of difference to that house structure and its moisture issues.... but good grief!"

Serving Knoxville, MD and surrounding areas
In business since 2009
Free estimates
Warranties offered
"This probably the most professional service organization I've worked with in any capacity. They did a comprehensive audit and we discussed issues that could be remediated prioritized by the biggest bang for the buck and then they did the fixes we agreed upon. I always felt like I was dealing with an expert who had my best interests at heart - work that they could have done that they advised could be deferred. Ended up increasing the insulation in the attic which I'd known for years was a problem and sealing the ducts which has made a noticeable difference. I'd happily recommend Atlas to anyone who thinks they might benefit from a home energy audit and efficiency upgrades."





+16
Serving Knoxville, MD and surrounding areas
In business since 1907
Free estimates
Credit card accepted
"Debbie, the AC&R salesperson, was very knowledgeable and confident. They were the 2nd quote I got for work and came in even lower than I expected (which gave me pause as a low bid is a red flag). But true to her word, they did the work professionally (mostly...see below) and promptly. While I had another company do the energy audit for the Pepco rebate, AC&R took over the work, did the blown fiberglass one day and the spray foam the next.
For the blown fiberglass in the attics above our additions, they added spray foam (from a can) around any gaps per the contract and foam board baffles at the soffits. The installer noted that all our soffits were blocked and the batting insulation was too wide for the rafter channels, so he leveled it out as best he could to ensure an even coating of blown insulation. At the end, he sealed up the gaps between the attic and our to-be-finished upstairs (cape cod style, so all one room).
For the spray foam insulation, the team came in the next day, and I had to be out of the house due to fumes. I did come back around noon as they expected to be done well before then. They didn't know I came in and I went to the back of the house to watch TV on my work break. The one annoyance was during their cleanup, one of the installers came down into our kitchen and then saw me. He said he was looking for a vacuum cleaner to clean the stairs. I told him don't worry about the carpet as it was getting pulled up, but this was the one piece of unprofessionalism I noted above. Contractors should NEVER use the homeowner's property; they should bring their own tools, including vacuums!
While the spray foam can get very messy, they kept the splatter mostly contained to inside the crawlspace, not the finished flooring. However, I was surprised that they didn't tape off the outlet covers or light switched. since the particles are so small, we're going to have to replace the switches/receptacles at our cost. Also, there was a storm door screen that wasn't covered and now needs cleaned. Basically, I think they should have taken more care in covering the very few items we left upstairs and the outlets/switches.
They didn't spray around the window frames (large gaps where window weights used to be) because the open cell foam would expand too much. If I wasn't there, I think they would have just left, but it was clear in our contract discussions they needed to insulate those spaces too. They used a few cans of "Good Stuff" equivalent, but didn't fill in the gaps entirely. It did the job well enough, but it's a ding against them as I expected more preparation.
Lastly, I thought that AC&R would walk me through all the scheduling and final "test out" (for the Pepco rebate), but I had to contact them and schedule with someone different each time. They were always prompt, but I expect the experts to know to do this for/with me rather than expect me to know the process. I go through it once in a lifetime while they do it weekly.
While the end of the review sounds more negative than positive, I would definitely recommend AC&R out to others as they're priced right, they have been in business for over a century, and like any contractor, you just need to follow up to be sure everything is done to your satisfaction.
"
Serving Knoxville, MD and surrounding areas
In business since 2004
Credit card accepted
"The work that Metro Insulation, LLC did was well done. The contractor was very kind. I was a new member of Angie's List at that time. I didn't really understand so much what the big deal was. It wasn't a very large break in the price, but it wasn't a tremendous amount of money so I was glad we did this. I would recommend the company. The insulation they installed did end up making our house warmer. The price was considerably more than what I expected it to be, but I really wanted to get this done so I didn't comparison shop. I would shop around more before making a decision whether I would use them again."

Serving Knoxville, MD and surrounding areas
In business since 2018
Free estimates
Warranties offered
"We had a great experience with Ridge. The salesperson was very clear about the insulation options at the outset. The removal of old insulation and installation of new was done in one day. We are very pleased."





+8
From average costs to expert advice, get all the answers you need to get your job done.

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