Get matched with top window and door contractors in Potomac, MD

"Bottom Line: If customer service, especially years after installation, matters to you, then you NEED to work with this company. In 2018, we had new Provia external doors installed for our entryway and garage. After 8 years, the door sweeps were beginning to wear, and unfortunately, the original installer had retired his business. I was uncertain who exactly should handle the replacement in this case. As a long shot, I contacted Zen Windows who installed a Provia patio door for us in 2025. They sent out a technician who honored Provia’s warranty on our 2018 doors, replaced the sweeps, and realigned the doors as well. In a world of truly lackluster customer support, Zen Windows stands out as truly great. You will not find a better company."

"They offered a couple of options to fix our broken window. Mr Boston was very pleasant to work on. The worker arrived on time and did the work as promised."

"Egress Windows Fairfax installed an egress window in my basement and did a fantastic job. The window permits emergency evacuation from a room being converted into a bedroom. The reasonable cost of the egress window immediately raised the value of my home. To minimize damage to my yard and my neighbor’s yard the company manually dug the pit for the egress window to below the foundation line and beneath the foundation drainage pipe. I was very surprised to see a large sump pump pit installed below the foundation. The contractor explained that they do this as a service in the event of any future drainage issues it is quick and low cost to install a sump pump. Small stones filled the bottom of the pit. The contractor offered several options for pre-fabricated surrounds to line the pit. Every member of the crew of Egress Windows Fairfax knew their job and worked diligently. They only rested during their lunch time. At the end of the second day the job was completed and the soil was well graded around the new egress window. This is a company with long term employees who take pride in their work and who strive to satisfy their customer. I highly recommend the company."

"Replaced all the screening on our patio and replaced the door to access the patio. Was reasonably priced and prompt in doing exactly what he said he would do. Would definitely hire him again to do other work around the house."

"Excellent job in installing windows and bow window at my lovely home. It looks beautiful and we are very happy with the results. Thanks"

"Their Handyman Nestor Ramirez came my house within two hours after I contacted Chapin Handyman LLC; and it took him less than 30 minutes to locate and clear away the obstructions preventing my upper window from closing completely."

"I was very happy with response from Eddis. He gave me a quote upfront and followed it up with an invoice via email. I paid him half at the beginning and another half when he came back to install the window. He was very professional and respectful of my house. I will definitely use A.R. Glass again if I have window repair needs."

"From the quote to the completion of the installation, we were very happy that we chose Unicorp. We did a full (28 windows) window replacement and 1 exterior and storm door replacement. The windows are the Prodigy by Uncorp windows and they are beautiful and well-made, and the price was more than competitive with the other quotes we received. Our house is 100 years old and still had the original windows, so it was a very challenging and lengthy installation, but their installer did an excellent and very thorough job. We plan on using Unicorp again in the future when we replace our remaining exterior doors."

"The Premier Windows and Glass has provided an excellent service for me! A frame of one of the windows in my condo was broken, and I looked for a company that would fix it and prolong the life of the window. So, I was very happy to discover The Premier Windows and Glass. Their technician was very polite, professional, and knowledgeable. Not only did he do a quality job on fixing the frame, but he also explained to me what needs to be done to prevent the window from breaking down again and avoid paying a lot of money for its replacement. In addition, the manager and technician responded to my service request in a prompt manner. The problem was solved on the day when I called the company. Last but not least, the company offers competitive service rates and does not push people to spend more money than is absolutely necessary. I would strongly recommend this company to anyone who needs to have a window fixed or replaced."

"Nova Exteriors did a fantastic job on our windows. Tom came to give us our estimate and walk us through the various products they provide. He did a great job at answering our questions and showing us what our options were without being in-your-face-buy-my-product sales guy. The team that came and installed the windows did an amazing job. They were in and out in half a day. We had five double hung windows installed and one massive picture window. They were courteous, on time, and cleaned up inside and outside when they were done."