You Want BBB Accredited Window Repair Company in Dallas? Thermal windows (J & M Glass Company) make your replacement windows right here in our Dallas, Texas factory. When you come into our plant/showroom you will see the quality and attention to detail that has made us “America’s Finest Window” since 1992. We offer vinyl replacement windows, thermally broken aluminum replacement windows, and fiberglass replacement windows at factory direct prices. We offer our entire windows ready for new construction as well as for retrofit. What is a Thermalized aluminum window? In addition to having double or triple insulated glass, along with other performance options such as Thermal E+™ and tinting, a Thermalized window offers another important feature. The window frame and sash frames are insulated against heat and cold conduction. This is done by separating the outside metal parts from the inside with a material such as polyurethane, greatly reducing the amount of heat or cold transferred through the frames. This feature is known as a thermal break or thermal barrier. How does a Thermalized window perform? Thermalized windows are manufactured from close-tolerance aluminum extrusions. All of our thermal barrier aluminum frames are heat strengthened by bringing the raw aluminum up to a T5 temper to increase both strength and rigidity. This allows us to build extremely large windows without affecting performance like most aluminum windows. They have lower air leakage and higher resistance to heat transfer than non thermal break windows. With double glazing, they will stop 26% to 38% of the heat lost through comparable wood windows made at local millwork shops. A thermalized aluminum window performance is equal to or better than wellmade wood windows. Thermalized aluminum windows surpass strict industry specifications. Air leakage with a 25 MPH wind blowing outside cannot exceed 0.375 cubic feet
per minute (CFM) for every foot of weather-stripped window perimeter. Our 700 Series Double Hung allows only 0.06 CFM air infiltration – one sixth of the industry standard! Old, worn out windows often have rates of 1.5 or more, 25 times the air leakage of our best Thermalized aluminum windows! Do Thermalized windows prevent condensation? No window is condensation-proof. Even walls will “sweat” under high humidity. Windows do not cause condensation; they simply prevent moisture from escaping and provide a surface that allows condensation to be readily seen. If inside glass and frame surfaces on Thermalized window show excessive moisture, you can be sure that moisture is also present in your walls and ceiling.
About Author We are the only window manufacturer in the Dallas-Fort Worth area that maintains our own in-house, full time, and installation department. Our installation department is one of the most experienced and knowledgeable in the industry, fully trained to expertly install our window systems into almost any opening. No one installs vinyl replacement windows and thermally broken aluminum replacement windows with more precision than our installation pros! We control the design, manufacturing, sales, and installation of your windows and back up our work with one of the strongest limited lifetime warranties in our industry!
Contact Us Dallas Showroom & Manufacturing Plant J & M Glass Company, Inc. 8808 Empress Row Dallas TX 75247 (214) 630-5885 Fort Worth Showroom J & M Glass Company, Inc. 3461b Blue Bonnet Cir Fort Worth TX 76109 (817) 731-8886 Find out more on
www.thermalwindowsdfw.com