Thermal Windows

Business Details

34 Years

experience

Your Trusted Source for Custom Windows & Doors in Dallas

Since 1992, Thermal Windows has been Dallas-Fort Worth's premier manufacturer and installer of high-performance windows and doors. Our in-house team handles every aspect from custom design to professional installation, ensuring precision and quality control. We specialize in vinyl, thermally broken aluminum, and fiberglass replacement windows, along with energy-efficient new construction solutions. Our factory-direct pricing eliminates middlemen, offering homeowners exceptional value without compromising craftsmanship. With over 14,000 successful installations across North Texas, we back our work with one of the industry's strongest limited lifetime warranties.

Our dedicated installation department sets us apart, featuring fully trained professionals who guarantee flawless execution for every project. From single replacements to full-home transformations, our focus remains delivering tailored solutions that enhance comfort, aesthetics, and property value. Recognized in local media and trusted by thousands, we maintain our Dallas-based manufacturing facility to uphold strict quality standards. Whether addressing thermal efficiency concerns or modernizing home exteriors, our team combines technical expertise with personalized service to meet each client's unique needs.

Services

Single Hung Windows Double Hung Windows Sliding Windows Casement & Awning Tilt & Turn Windows Patio Doors Custom Windows Window Installation Energy Efficiency New Construction

Details

Year established: 1992

Highlights and features

We maintain our own in-house installation team for complete quality control
Factory-direct pricing eliminates middlemen markups on all window systems
30+ years serving Dallas-Fort Worth with proven window replacement expertise
Thermally broken aluminum technology improves home energy efficiency
Backed by one of the strongest limited lifetime warranties in the industry

What people say

Great job Pleasurable experience Noise reduction Professionalism Added value

Website

Update Listing

Services

Single Hung Windows

Our single hung windows feature bottom sash that slides vertically while top sash remains fixed. Designed for easy interior cleaning with fold-in sashes and standard screens over venting portions. Ideal for traditional homes seeking improved thermal efficiency through durable vinyl construction that maintains structural integrity over time.

Double Hung Windows

Double hung windows offer both upper and lower sashes that slide vertically and fold inward for cleaning. Full-screen coverage maintains ventilation while security features ensure proper closure. Perfect for multi-story buildings where exterior access proves challenging, combining modern functionality with classic aesthetics through customizable vinyl frame options.

Casement & Awning

Casement and awning windows utilize smooth-operating crank mechanisms with multiple locking systems. Available in aluminum and fiberglass materials that resist weathering while maintaining slim profiles. Electric operators available for hard-to-reach installations, making them ideal for contemporary and mid-century modern architectural styles requiring precise ventilation control.

Custom Windows

We create custom-shaped windows for unique architectural requirements, including eyebrow, bow, and geometric designs. All custom windows maintain thermal performance standards through advanced frame materials and insulated glass packages. Perfect for preserving historical accuracy while modernizing energy efficiency in distinctive homes across Dallas-Fort Worth.

Window Installation

Factory-trained technicians handle complete window replacement and new construction installations. Our process includes precise measurements, structural preparation, and final adjustments to ensure optimal performance. Using proprietary installation techniques developed over 30 years, we guarantee proper sealing and alignment for maximum energy savings and long-term durability.

People

Martin E Gates II

President

Leading J & M Glass Co., Inc. since 1992, Martin E Gates II brings decades of window industry expertise to Thermal Windows. He oversees operations at our Dallas manufacturing facility, ensuring quality control from design to installation while maintaining our commitment to factory-direct pricing.

Questions

Why choose Thermal Windows over other Dallas window companies?

We're the only DFW window manufacturer with in-house installation teams and factory-direct pricing. Our 30+ years of local experience ensures precise solutions for Texas climate challenges.

What window frame materials do you offer?

We provide three high-performance options: vinyl for affordability, thermally broken aluminum for strength, and fiberglass for durability. Each material meets strict energy efficiency standards.

Do you service both residential and commercial properties?

Yes, we handle projects from single-family homes to commercial buildings. Our product range includes specialized solutions for new construction and historic preservation projects across North Texas.

How does your installation process work?

Our factory-trained technicians follow a 5-step process: initial consultation, precise measurements, structural preparation, professional installation, and final quality inspection to ensure perfect results.

What energy efficiency features do your windows offer?

We use Low-E glass coatings, thermal barrier technology, and triple-pane options to reduce energy costs. Our windows meet Texas energy code requirements while improving indoor comfort year-round.

What warranty protection do you provide?

We offer one of the industry's strongest limited lifetime warranties covering both materials and installation. This comprehensive protection transfers to new homeowners, increasing property value.

Reviews (4)

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!!

Stephen Brock

Jan 16, 2020 Report

Excellent experience from initial estimate to final installation. Installers were meticulously clean, courteous and punctual.

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!!