A Better House
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A Better House
If you're thinking about installing replacement windows or a sliding patio door or a steel entry door but you aren't sure because you've heard or read about the high pressure sales tactics, disappointing results or worthless warranties - we understand. My name is Joe Kelemer, my brother Gabriel and I own our company.

We started our company in 1999 with one purpose: make every customer a customer for life. Every window installation contractor will say they have experience. The Kelemer Brothers have successfully installed over 50,000 replacement windows since 1999. We believe that this is the strongest evidence of our dedication to delivering quality window installations for our clients every time.
Services
A Family Business with a family values approach for over 20 Years, ANGIE'S LIST SUPER SERVICES AWARD winner 10 years in a row - building great relationships with excellent service. No Salespeople, No Pressure - Owners Gabriel or Joe Kelemer will personally meet with you. If you want a company that will take great care of you with 97% A's, then give us a call at (410) 299-0038.
Joe or Gabriel Kelemer (owners) prepare every estimate (we don't use commission salespeople). We understand that most homeowners have questions about the process of installing new replacement windows in their home. We developed a detailed installation procedure for a typical home based on successfully installing over 50,000 windows since 1999.
Improves curb appeal and increases resale value. There is an almost endless choice of styles, materials and colors so we can match the design of your home. Plus, a 2008/09 Cost vs. Value Report (a combined effort by Remodeling magazine and REALTOR magazine), calculated that the average homeowner can expect to recoup about 93% percent of their investment in vinyl replacement windows.
Serving Baltimore, Silver Spring and the entire region in Maryland, we also offer replacement windows and doors in the Potomac region, Washington D.C., and Virginia for residents looking to upgrade their home's appearance and its security. At Kelemer Brothers, we offer a wide selection of doors to appeal to every type of homeowner.
In addition to replacement windows and doors, Kelemer Brothers replaces exterior home siding for homeowners in Maryland, Washington, D.C. and northern Virginia. For clients looking to upgrade both their home's overall appearance and its value, we offer a number of siding replacement options. Some people want to switch from traditional wood siding to vinyl or fiber cement to cut down on costs or maintenance.
Reviews (5)
Lisa Ercolano
Lisa Ercolano
Oct 25, 2021
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We had the Kelemer Bros. replace our back door and found them to be completely professional and wonderful to work with, from start to finish. Their installer was on time, pleasant, and meticulous about his work. He even cleaned up thoroughly afterwards. We highly recommend doing business with KB!
Nikki Martin
Nikki Martin
Oct 07, 2021
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I am so grateful for Joe and his guys. From Joe’s first phone call to to last goodbye it was complete professionalism. When the crew came in to replace the windows everyone was very nice and respectful and made… sure the house was clean when they left. Joe came back, did a final walk through to make sure everything was perfect. Thank you so much for all your hard work!
Lana Batsenko
Lana Batsenko
May 28, 2021
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Great experience, very professional and friendly. Did a great job. Very quick and clean. Highly recommended!
Shaun Rutherford
Shaun Rutherford
Apr 16, 2021
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From the first meeting with Joe up till the window install today it was easy and great. Honest and up front and tells you what he suggest as if it was his home. Great experience and would recommend Kelemer to anyone.
Sarah S.-F.
Sarah S.-F.
Feb 14, 2021
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Such an easy company to work with. Straight forward, did what they said they would do in a timely manner, and for a very competitive price. We were frustrated dealing with other window companies that wanted us… to sit through a whole song and dance about their windows and did not respect our time just to get an estimate. We called Joe who gave us an estimate without the song and dance and we immediately felt Kelemer was right for the job. Windows look great. Quality workmanship with very proficient installation techs. Would 100% recommend this company! Save yourself the song and dance and