Thermal Windows

Business Details

34 Years

experience

Trusted Window Manufacturer and Installer in Dallas, TX

Since 1992, Thermal Windows has been the premier window and door manufacturer and installer serving the Dallas-Fort Worth Metroplex. Our company combines custom design capabilities with professional installation teams to create tailored window and door solutions for residential and commercial properties. Headquartered in Dallas, Texas, we operate a dedicated manufacturing facility that produces high-performance vinyl, thermally broken aluminum, and fiberglass windows at factory-direct prices. Our in-house installation department consists of full-time professionals trained to expertly install our window systems into any opening, backed by one of the strongest limited lifetime warranties in the industry. With over 14,000 homes served across 75+ cities including Addison, Arlington, Denton, and Fort Worth, we maintain a reputation for precision craftsmanship and energy-efficient solutions.

Our team specializes in both replacement windows and new construction projects, offering single hung, double hung, sliding, casement, awning, tilt-and-turn, and custom-shaped windows. As a locally owned business, we prioritize direct customer engagement through showroom consultations, on-site evaluations, and personalized design discussions. Our commitment to quality extends to our materials selection, featuring ThermaTru entry door systems and advanced glass packages that deliver superior insulation and noise reduction. Recognized in both the Underground Shopper and KXAS Channel 5's Sabrina's Solutions, we maintain strict quality control across all operations from design to installation. This vertically integrated approach ensures every project meets our exacting standards while providing exceptional value through competitive pricing and comprehensive service offerings.

Services

Vinyl Windows Aluminum Windows Fiberglass Windows Patio Doors Custom Windows Window Replacement New Construction Windows Commercial Windows Energy-Efficient Windows Window Installation

Details

Year established: 1992

Highlights and features

We maintain our own in-house installation department with full-time professionals
Factory-direct pricing with complete control over design and manufacturing
Serving 75+ cities across DFW Metroplex since 1992
Backed by one of the strongest limited lifetime warranties in the industry
Specialize in energy-efficient solutions that reduce utility bills

What people say

Great job done Pleasurable experience Electric bill decreased No outside noise Professional installers

Website

Update Listing

Services

Vinyl Windows

Our vinyl windows combine durability with energy efficiency through multi-chambered profiles and fusion-welded corners. Available in single hung, double hung, and sliding configurations, these windows feature low-maintenance surfaces and come with standard screens over venting portions. Custom options include divided lites and specialty shapes for unique architectural requirements.

Aluminum Windows

Thermally broken aluminum windows provide exceptional strength while minimizing heat transfer. Our hybrid aluminum systems include fixed/awning combinations and vertical butt joint designs suitable for both modern and traditional architecture. These windows feature durable powder-coated finishes and advanced glass packages for optimal performance.

Fiberglass Windows

Fiberglass windows offer superior strength-to-weight ratios and dimensional stability across temperature extremes. Our fiberglass systems include casement, fixed, and tilt-and-turn configurations with slim profiles that maximize glass area. These windows maintain structural integrity while providing excellent insulation properties.

Window Replacement

Specialized replacement window services focus on improving energy efficiency and aesthetics for existing homes. We offer retrofit solutions that integrate with original structures while upgrading to modern performance standards. Our process includes precise measurements, professional removal of old units, and seamless installation of new high-performance windows.

Custom Windows

Custom window fabrication caters to unique architectural designs and challenging installations. Our capabilities include eyebrow windows, bow windows, and complex geometric shapes requiring precise engineering. Each custom window maintains the same performance characteristics as our standard offerings while meeting specific dimensional requirements.

People

Martin E Gates II

President

Martin E Gates II leads J & M Glass Co., Inc. with over 30 years of industry experience. He oversees all operations from design to installation, ensuring quality control across the company's window manufacturing and service offerings.

Questions

What types of windows do you offer?

We offer vinyl, aluminum, and fiberglass windows in single hung, double hung, sliding, casement, awning, tilt-and-turn, and custom shapes.

Do you serve areas outside Dallas?

Yes, we serve 75+ cities across the DFW Metroplex including Fort Worth, Denton, Plano, and Arlington.

What warranty do you provide?

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

Can you install windows in new construction?

Yes, we specialize in both replacement windows and new construction window systems for residential and commercial properties.

How do your windows improve energy efficiency?

Our windows feature advanced glass packages and thermal barrier technologies that reduce heat transfer and lower utility bills.

Do you offer free estimates?

Yes, we provide free estimates through phone consultations or in-person showroom visits at our Dallas facility.

Reviews (5)

Write a Review

Aubrey Humphrey

Oct 20, 2021 Report

I ordered over 40 windows for new construction. Over $10,000 in windows. As we're installing we notice there are splits in the nail fins on almost every window corner. I called the manufacturer and spoke to the… manager who claims this is the way they are made and the fins are simply just snapped onto the windows. After I asked him how would I make sure my windows are water tight, he claims that I should "just use some silicone"
Silicone is the last resort product for water proofing. A properly installed new construction window should technically not require silicone. But that's the best

Carolyn Beatty

Jun 11, 2021 Report

I had to replace a wooden window and heavy wooden sliding glass door. These guys went above and beyond! Outstanding team, meticulous work, great products! I highly recommend!!

Jene Buckner

Jan 16, 2020 Report

Wonderful from estimate to installation. Good communication and timely delivery. The installation crew was meticulous. Had 20 windows installed over 5 days. 5 stars!!

John R. Black

Aug 18, 2019 Report

5 star satisfied with Thermal Windows DFW. We had 11 windows replaced in 2015 and then had the remaining six replaced in 2018. I did not want vinyl windows and got an aluminum frame (brown) instead. We decided to have two kitchen windows replaced with solid glass model instead of the type that can be opened. We were shocked by the beautiful… view and openness it added to our rather small kitchen.

We decided to leave the blinds we ordered in the box and put them in storage. The windows have performed without issue and have made a significant improvement to the former leaky windows.
Communication

David Scott

Aug 09, 2018 Report

Did a great job on the installation and price but one of their employees scratched our kitchen sink and did not put back on the handle they removed for the in wall gas heater in our bedroom bathroom. My wife contacted them but did not get any response about replacing them or fixing them. I listed the problem on the warranty card I mailed off and… still did not get any response. Update: They contacted me and have ordered a replacement handle for the gas heater and are trying to find a company that can polish out the scratches in the kitchen sink.