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.

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!!!

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 them today!

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 inch sized hail balls. I knew it was bad when I had dozens of storm chaser companies knock on my door asking if they could inspect my roof. Instead of calling any of them back, I immediately reached out to Tyler and asked if he could help. Tyler told me although working with insurance companies is not the focus of Tri County, he personally had prior experience at other companies that did exactly that - it put him in a unique position in my eyes for Tri County to bring quality/accountability of work yet also have the background to ensure getting a claim approved by my insurance company. I decided to work with him. Tyler was there every step of the way in terms of getting on the roof himself, taking tons of pictures, explaining to me that although he couldn’t “guarantee” the insurance claim would be approved, he said it’s one of the worst hail damage he’s ever seen and insurance companies have approved roof replacements for way less damage. I filed the claim and we were on our way. He showed up when the insurance adjusters came and even was up there pointing out and circling in chalk all the areas of damage so the adjuster didn’t miss it. We were doing all of this BEFORE I had even signed any type of contract with Tri County. I was NEVER pressured into immediately signing one of those shady, binding exclusive-right-to-work contract with Tri County. Tyler was just helpful. Always. Like a true professional acting with integrity. He was extremely patient with my wife and I when we took forever deciding on roof shingle colors, trim/gutter colors, changing the scope of work to add more, etc. I must have asked him a hundred questions throughout and he always answered at-length so I was never surprised by anything. The claim was ultimately approved and I signed the contract with Tri County to do the work. Less than a week later, I signed another contract with them to replace my front door (instead of the other contractor I used back in 2022) as it was on my list of to-do’s for awhile and I simply wanted to give Tyler more business based on all of my positive interactions with him. Now that all of the work is complete - I can 100% say it was one of the best decision I’ve made because the crews doing the job were just as professional, efficient, and provided incredible quality in their work (caulking was PERFECT). When installing my front door, they were the first crew to ask me questions about how I wanted the color design to look like before they started. And I’m glad they did because I changed my mind twice in an hour and they were totally flexible to ensure the desired end state was accomplished. Most other crews would have just showed up, started the work, and knocked on my door when it was finished - where more than likely I would have been like “What the Eff? That’s NOT how I wanted that to look!” And it would have been a huge debacle to undo it. Not with Tri County. If you want to work with an honest company, with very competitive pricing, and that brings an attention to detail on everything… HIRE THEM!