Thermal Windows

Our vinyl windows combine durability with energy efficiency through multi-chambered frames and fusion-welded corners. These low-maintenance windows resist warping and fading while maintaining thermal performance. Available in single hung, double hung, and sliding configurations for both replacement and new construction projects.

Thermally broken aluminum windows provide strength and modern aesthetics with improved energy efficiency. Our hybrid aluminum systems feature fixed and operable components that withstand harsh weather conditions. Ideal for contemporary architecture and commercial applications requiring structural integrity.

Fiberglass windows offer superior strength-to-weight ratios and dimensional stability across temperature extremes. Our fiberglass frames maintain their shape while resisting corrosion and UV damage. Particularly suited for coastal areas and high-traffic commercial environments requiring long-lasting performance.

Our factory-trained installation teams ensure precise fitting for all window types using specialized tools and techniques. The process includes proper flashing, insulation, and sealing to maximize energy efficiency. Backed by comprehensive warranty coverage for both materials and workmanship.

We create custom-shaped windows to match unique architectural requirements using advanced manufacturing techniques. From eyebrow windows to complex geometric designs, our custom solutions maintain structural integrity while enhancing aesthetic appeal for both residential and commercial properties.

Martin E Gates II leads J & M Glass Co., Inc. with over 30 years of window industry experience. Under his leadership, Thermal Windows has become Dallas-Fort Worth's premier window manufacturer through a commitment to quality craftsmanship and customer satisfaction.

We provide vinyl, aluminum, and fiberglass windows in various styles including single hung, double hung, sliding, casement, and custom shapes.

Yes, we offer window solutions for both residential properties and commercial buildings across the DFW Metroplex.

We employ our own full-time installation teams who receive specialized training for all our window systems.

We offer one of the strongest limited lifetime warranties in the industry covering both materials and installation workmanship.

Our design consultants assist in choosing windows with optimal energy performance ratings for Dallas-Fort Worth's climate conditions.

We serve over 50 cities across the Dallas-Fort Worth Metroplex including Dallas, Fort Worth, Plano, and Arlington.

When planning to replace *every* window in my house and the sliding glass door, I got estimates from three different companies, including Thermal Windows. Not only was the Thermal Window estimate at least $10,000 less than the other two, I was impressed with the interaction when Taylor Harbert came out to the house. He explained information in language that was easy to understand, and answered all my questions thoroughly.

I did not feel pressured to make a quick decision, and when I emailed Taylor after his visit, he answered other questions that I had. It was also important to me that Thermal Windows is a local company that makes the windows it sells and that the installers are company employees, not contracted labor. The installation went well. The installers were courteous and careful when moving furniture to access windows.

The removal of the existing windows and ongoing clean up during installation was spotless! I LOVE my new windows, and my neighbors have complemented them as well. I would recommend Thermal Windows enthusiastically.

After shopping around for windows for quite a while, I called Thermal Windows and was blown away by their service. Donny was extremely knowledgeable and guided me through the entire process. The pricing was much better than I received from other companies, and the quality was far superior. Looking forward to saving money on my electric bill which will pay these off in no time. Thank you to Donny and the Thermal Window's team!

Thank you! Thank you! Our windows look amazing! From the beginning with John (salesman) til the end with Jose (installation) everything was perfect. I will definitely be referring my family and friends. Thanks again for such a great experience. Service: Window installation

This company is outstanding and so are its employees. I had all the windows in my house replaced and the new ones are gorgeous! I live off an access road and the traffic noise is almost non-existent now. Taylor Harbert did my estimate and he was great. They were absolutely on time with everything. Junior, Raphael, Jesus and Eli did the install. They were fast but did an outstanding job on the install and they cleaned up beautifully. They were always on time. If I could give 10 stars I would. You can't go wrong with this company. A+++++++++++++