Tri County Windows and Siding

We had 23 windows and a sliding glass door installed by Tri County at our Ashburn home in 2024. From start to finish, the process was smooth, efficient, and professional. The crew was in and out. They also offer a military discount which we really appreciated. Tim Grantz and his wife Arada are incredibly responsive, attentive, and easy to work with. Communication was always quick and clear. If you’re looking for reliable window service with great workmanship and even better customer service, call Tri County.

I first met Tyler and Tri County in the summer of 2022 when I was getting quotes from companies to replace all of the original windows of my house (and replace a French door). At the time, I got about 10 quotes from 10 different companies and Tri County was at the top of the list but their window manufacturer (which offers incredible quality) added too much of a markup for making their windows black instead of white. I ended up choosing a different contractor/company and I still somewhat regret that decision not to go with them back in 2022. However, both Tyler and Tri County left a lasting impression on me based on their thoroughness and efficiency when it came to getting me what I needed or questions answered. Fast forward to Fall of 2024, my house got hit by a major hailstorm with 1

Tim and his team did an amazing job installing 23 new windows at our home in Sterling. They were professional, efficient, and incredibly detail-oriented. The windows look wonderful and the whole process was smooth and stress-free. This was our second time using Tri-County as Tim and team previously installed a new front door on our home. Highly recommend Tri County to anyone looking for exceptional door and window installation.

We knew when we bought our home last August that all of our windows needed to be replaced. They were original to the house built in 1989 and were in awful shape. We researched and got quotes from several companies, then we found Tyler and Tri-County. Tri-County came highly recommended by word of mouth and a few of my clients have used them as well with great success. We replaced all 21 windows in our home. They did it in ONE day and left absolutely no mess behind. They made sure each and every window was wrapped on the outside and sealed on the inside. I cannot say enough about Tyler and his crew for all the great work they did at a reasonable price. From the initial contact through window ordering to installation they were extremely professional and courteous. Don't look any further call

Tri County Windows did an excellent job replacing our windows and window frames. The team showed up, did the job, cleaned up and left in a timely manner. They were very knowledgeable, professional, respectful and kind. They demonstrated how to use the new windows, showing features that were unfamiliar to me and did an excellent job in the process! We love our new windows and frames and they look AMAZING !!!!! Thank you Tri County Windows on a job well done!!!