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"

"They did a great job. I was very satisfied with the job they did. Review by E.G in Jefferson"

"Lorenzo and his team were absolutely wonderful. They came to my house right away to see what was going on and were able to come back within a few hours and have the job done that same day. It was such a relief for me. Lorenzo is kind and professional and does beautiful work! Highly recommend!"

"We recently had 8 sliding windows installed. The crew was courteous, efficient and cleaned up all debris. In addition to that they cleaned the windows after completion. Anthony was our salesperson and gave a good presentation and answered questions before and after accepting the contract. Pricing was reasonable. I especially would like to comment on their office manager, Diana. She was a pleasure to deal with and has to be a great asset to the company I would highly recommend."

"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."

"The Egress window installation went well and this company knows this how to do this type of project. I recommend them as this is the company’s specialty"

"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."