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 !

Amazing experience from start to finish! We recently had American Windows replace all the windows…read morein our house and it could not have had a better experience from end to end. Ben was our point of contact throughout the entire project. He came out to take the initial measurements, talk through the project, and generate a quote. It was a complete zero-pressure experience. After receiving the quote I made an appointment to visit the showroom (though Ben also offered to bring some window samples to the house). We really liked the windows (Sunrise Restorations) and moved forward with the project. The installation went flawless! I'm a bit of a perfectionist and usually have to stop myself from nitpicking on small little flaws from general contractors, but American Windows did such a stellar job I couldn't find a single flaw in their work. I'm very happy I went with 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.

I needed an insulated picture window replacement. I believe we used that business a few years ago…read morewhen we replaced uninsulated picture windows on the front side of the house. The sales representative did not believe that WW did that kind of thing anymore, but had a very difficult time understanding the kind of window I was describing. I spoke with that person 3 times to try to help him understand this is not a typical window, but one that is fixed in place. To no avail, I chose another company. I would give WW a 2 star rating.

I purchased 11 windows (my whole house) from Window Nation in June 2025. While the salesman seemed…read moreknowledgeable, there are some issues of which I am not satisfied and based on these, I would not recommend Window Nation. First, the energy efficiency of the product is lacking. The salesman, using a sample window and a little device, noted the temperature on one side of the window using the device and then noted the temperature on the other side of the window without the device. A marked difference. However, this winter during a cold spell, my home was quite cold. I had to increase the heating system thermostat temperature to make the home warmer. I put my hand on the inside of several of the windows and surprise, the cold was coming through the window. I had to purchase new thermal drapes to put on windows to try and keep cold out. My utility bills were through the roof this winter so that little gadget was useless. Secondly, when closing an open window, the upper pane slides down with the lower pane and you have to reach up the outside of the windows to push the upper section back into place to be able to lock the window. Lastly, I opted for the 18 month promotion. The service company Window Nation uses is named "Service Finance Company, LLC". THEY ARE A WASTE!!!!!!!! All of their Customer Service Representatives are offshore and when you call, they have no clue how to solve your billing issue. I pay my bills online and since purchasing the windows, I have only had ONE (1) month where I did not have a problem making the payment. All in all, I would suggest that you look elsewhere for windows and not window nation. Oh, and one more item, I received a card in the mail noting a promotion, but 2 get 2 free. Well, it was bogus as the salesman noted that this promotion does not include installation.

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

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.

I had a really great experience with ZEN Windows from start to finish. What I liked right away was…read morehow casual and easy everything felt, no pushy sales tactics, just straightforward and friendly communication. They were super responsive anytime I reached out with questions. Emails and calls were returned quickly, which made the whole process feel smooth and stress-free. They also got someone out pretty fast to measure the windows, so things kept moving without delays. I ordered 10 windows for my townhouse at the end of February, and everything stayed on track. The windows came in April, and installation was set up for the very next week, exactly how they said it would go. The install team (two guys, led by the amazing Mark) was awesome, very professional, worked efficiently, and took the time to protect my floors and furniture. They cleaned up as they went, which I definitely appreciated. Scott, the owner, stayed in touch throughout the day of installation and honestly throughout the whole process. I had a couple of window and sash issues but Scott was amazing and the kind of communication and follow-through really stood out. Overall, I couldn't be happier with the experience. They did exactly what they said they would do, and the customer service was top-notch. I'd definitely recommend ZEN Windows to anyone. It really was a calm, "ZEN-like" experience. Haha!!

What a great and easy experience it was getting new windows from the Zen Windows folks in…read moreGaithersburg ! The team has been together forever and it showed. From the original meeting to the completion of project was seamless and flawless. After dealing with several different companies they're pricing quality of product and laid back professional approach was a appreciated. I would highly recommend Zen Windows.