Get matched with top glaziers in Mastic, NY

"I'm so happy with my new windows! My only regret is that I don't have more windows to replace! Aaron and his team were a dream to work with - communicative, friendly, and direct. They worked with me to scope out exactly what I wanted and they were very transparent and fair on price. The installation team was efficient and respectful, making sure everything was done to the utmost standards. My windows look amazing but more importantly they work fantastically! I was shocked at how much quieter and cooler my house was after the new windows were installed, and they are so much easier to keep clean. I will be recommending Thermo-Seal to everyone!!"

"Price was fair and work expertly done. I would highly recommend this vendor."

"Grey is a very dependable guy"

"We had our roof done and everyone was very professional. Our project manager, James, was very responsive and made sure to correct any issues that came up. This was a very different experience than some of the less professional contractors Iâ ve worked with."

"Corrected a slate problem I had done very professionally clean and on time"

"Me and my family ordered three bay windows in our house. Every one of them were installed flawlessly and they look amazing. This company will definitely be #1 on the list if we need any work done in the future."

"They definitely complete the work to the specification the outlined or better, for a very reasonable price which they are will to work with you on. Good people and great work."

"Excellent experience with John Lang. Very pleasant to deal with. Arrived on schedule and completed repairs to vinyl siding on my home. Very fair pricing. Would recommend."

"Overall excellent. My only quibble is that the screen over the window had holes but it was replaced within a week. I would use them again if I need another egress window. Note, these windows are primarily to let people out. If a fireman, or anybody else, have to get in they still have to break the glass."

"Peter and his team did a wonderful job of presenting the product, discussing the job, giving a fair price, constant communication, as well as a wonderful install process. We would absolutely recommend this company for vinyl siding replacement and will be calling them for windows in the future."