Based on an experience in March 2026...project initiated after discovering damage and considerable…read morewear & tear to 15 year old townhome roof. RESPONSIVENESS - very fast, very responsive, very professional. A tad too frequent, but apparently roof repair is a competitive business. INSPECTION - scheduled and conducted efficiently; exceptionally thorough inspection report (David). COST - in line with all other quotes, which are apparently driven by the insurance estimate. Green Oak differentiation included owner interaction, master roofer certification, 5 star rating, excellent warranty, professional documentation and workflow management. WORK - scheduled efficiently, material arrived on time the day before, crew arrived on time the day of, work was conscientious and completed in 3/4 day (townhome), clean-up (including loose nail hunt) was impressively thorough. AFTER - received certificate of completion in a timely manner, along with photo record of repaired roof. Not being a roofer, it's difficult to assess the integrity of the new roof & shingles, however the end result appears clean and professional. Suspect the new, high-quality roof will increase the townhome value and/or decrease time to sell based on the high-quality products used and overall curb appeal of the work. Overall quite satisfied with Green Oak. Recommend.

After a large javelin-sized branch impaled our ~5 year-old roof, all the way through the shingles,…read moresheathing, and paper, my insurance company asked me to get a 3rd party quote to compare to their assessor's. I reached out to Green Oak after searching on Yelp (s/o), and was extremely glad I did. Brian H. took me through the process from start to finish, including an insightful explanation of the insurance claim process. The free estimate happened within a few days and ended up being lower than the insurance-assessed quote. He recommended a roof "tune up" as part of the package without pushing or trying to upsell me for more, which i really appreciated. He also accommodated my inquiry of adding on the installation of a bathroom exhaust vent cap, which was missing when we moved in. After being extremely reasonable on pricing and lighting-fast on responses, they scheduled and completed the work the day after signing. The team was efficient and respectful, with a huge attention to detail. TL;DR - Highly recommend giving Brian and Green Oak Exteriors a shot to help fix your home exterior issues, especially when you are in a bind with your insurance company!

I would totally recommend this window company. I have a big house with about 40 windows that all…read morehave sail failure and need replacement. Because it is a big project, I actually contacted at least 7-8 companies for quotes and ended up using American windows because of their best price and the best windows brand and glass package. Energy efficiency was my priority so I want the best price and best windows which seems to be very hard. But Jay (the project manager) made sure I got what I wanted. The team went out to install 40 windows and they absolutely did an excellent job. They were super friendly and professional. I'm very neat and detailed so they made sure all windows are cleaned and properly installed. After installing, they vacuumed and even mopped the floor for me. I'm very pleased with their work !

I had American Windows replace several windows and a sliding glass door. They were half the cost…read moreof another company. In my original order in 2019, they showed up on time and completed the work in a timely manner. I had an issue with opening the screen door on the sliding glass door and called them. They were responsive and sent Paul out to repair the issue under warranty. He showed up early, found the issue and repaired it. This company is the easiest and most honest I've ever used. I highly recommend them.

I needed new windows and new sliding glass doors. The previous owners of our appartment had put in…read morethe cheapest possible units with the cheapest possible labor. With regards to the heating of our home, the windows were no better than screens. I reached out, looking for windows and installers. I had a few people come in and estimate the job. None of them impressed me until Greg from Windows on Washington came over. He walked me through several options and explained how the windows they used were manufactured and why. Windows on Washington got the job. My windows and my doors were being manufactured. So they sent out a wonderful gentleman to get the final accurate measurements. Great guy. After that, communication was wonderful as were were assessed of the stage we were in. This included when we got the email and calls explaining that, since we were on a higher floor, they needed to bring in some equipment to lift the new doors up to our balcony. No surprises. Installation day was amazing as Joon and his team came in, got everything into place, and cleaned up the areas to better than when they got here. Joon then went over the features on our windows and even explained how we get to and clean the outsides of the glass. Wonderful man and amazing team. Since then, we have gotten copies of our warranty and the guarantees. And the company has reached out twice to ask if we have any questions and to ensure that we are happy with our windows. We are. We are very happy with our windows. Almost as happy as we are with the people who got them into our home.

Windows on Washington just installed 23 Okna windows in our home. From the initial visit to the…read morefinish, they did an excellent job, and they came in ahead of schedule. I recommend them highly. Roger Pilon Bethesda, MD

They made me see all their information and house information after all that they then hung up…read more.. the worst customer service.

Whole-house window replacement nightmare -- GO ANYWHERE ELSE…read more We hired Window Nation in January for a full-house window replacement on our four-story townhome--a major, high-cost project. What we got: delays, broken promises, poor communication, and defective products. In early April, the windows arrived, but no one showed them to us before installation began. We discovered--from the outside--that they had been manufactured incorrectly. This, despite our contract clearly documenting HOA requirements. Window Nation admitted fault and promised to have VYTEX remake and replace all windows at no cost. During install, the crew also broke our basement sliding window. We were told a matching replacement would be "rushed." Almost two months later: still no window, no update, no resolution. Later, we were offered a small credit instead of full replacement. Doug (branch manager) confirmed this in writing, pending HOA approval. We got that approval--but once we relayed it, Doug and Window Nation disappeared. NO credit ! NO revised contract! NO action and, NO COMMUNICATION! After weeks of calls and texts to Doug and anyone else I could find at the main office, I finally heard back...he now claimed the bank required a revised contract and would "send it right over." Of course, that never happened either. Doug talks a great game but delivers nothing. The Window Nation callback system is also useless--you press a button, leave a voicemail, and never hear back. I reached one rep who refused to give his name, had no idea who Doug was, and promised to follow up. That never happened either. Window Nation's lack of accountability and professionalism is appalling. No credit. NO updated contract. NO basement window. NO follow-up! If you value your time, your money, or your sanity, GO LITERALLY ANYWHERE ELSE!

I left a message on a Sunday, the next day they were at my house measuring the window...by the end…read moreof the week the 2 windows where fixed. Couldn't ask for faster, more courteous, professional service - thank you

Potomac Glass Pro, was professional and reliable. They provided me with a window replacement. I…read morewould highly recommend this company for any future window restoration, repair or replacement.

We have Pella, wood, casement windows. A few have wood rot. Max and Oleg were kind enough to…read moreaccomodate my arrival time as I had to leave at a certain time. When I returned, they were already halfway done. Max and Oleg did a great job and I would happily hire them again. They are the consummate professionals.

From the owner: Cracked window? Damaged door? We specialize in fast, professional window and door repair, glass…read morereplacement, and custom glazing services throughout NoVA Area. Whether it’s a quick residential fix or a full commercial storefront upgrade, we bring expert craftsmanship to every project. Locally trusted, fully licensed, and insured—we get the job done right the first time. We offer same-day service, free estimates, and a commitment to quality that sets us apart. Call now and discover why homeowners and businesses across NoVa count on us for reliable, top-tier glazing solutions.

Simply put, our experience with Zen Windows was amazing. Could not recommend more…read more From our stress free and quick quote with David to a perfectly executed installation with James and team, Zen Windows was amazing. Their pricing is extremely fair and their turnaround time was great. If you are in the market for new windows and don't know where to start, I HIGHLY suggest reaching out to Zen Windows.

This is an update to my initial review. I wasn't going to use Zen windows because at the time of…read morespeaking with Scott I had a different company working on my siding in our townhome. However, I didn't use that company because they wanted a lot of money to redo windows and doors. Some time later I remembered Zen windows and reached out to them for a quote. It was the best decision we have ever made. I cannot recommend the Zen Windows team highly enough for their outstanding work in replacing the windows and doors in our townhome. From start to finish, their professionalism, attention to detail, and craftsmanship were truly exemplary. Every step of the process was handled with precision and care--no detail was overlooked. The team took the time to ensure that every window and door fit perfectly, operated flawlessly, and met our expectations. Their expertise was evident in their meticulous installation and their ability to troubleshoot any challenges that arose. Not only were they efficient and on time, but they left our home clean and tidy at the end of each day. It's rare to find a team that combines skill, professionalism, and a commitment to customer satisfaction, but Zen Windows delivered on all fronts. If you're considering window or door replacement, trust Zen Windows--you'll be thrilled with their results. They've completely transformed our home, and we couldn't be happier with their work.