We are the only window manufacturer in the Dallas-Fort Worth area that maintains our own in-house, full time, installation department. We don't use independent sub-contracted laborers to install your windows. http://www.thermalwindowsdfw.com/aluminum_windows.php

1. Be Smart - Know how a
Thermalized aluminum
window perform

2. 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.
• As the name itself indicates, the
windows which helps to prevent heat
entering into your home.

3. Do you know about thermal break?
• 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.

4. 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.
• 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.

5. A thermalized aluminum window performance is
equal to or better than well-made wood windows.
• Thermalized aluminum windows dallas
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.

6. Do you believe..?
• 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!

7. 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 a
Thermalized window show excessive
moisture, you can be sure that moisture is
also present in your walls and ceiling.

8. What is the recommended interior
humidity level?
• The maximum recommended interior relative
humidity ranges from 15% at -20ºF to a
maximum of 40% at +30º.
• Many homes have been built "tighter" to conserve
energy, leading to indoor humidity above the
recommended levels.
• The best way to handle high indoor humidity is to
vent the moisture to the outside.
• Bathrooms, kitchens and laundry areas should be
vented with a fan, or by opening windows slightly
when the areas are in use. If that does not help,
a dehumidifier might be necessary.

9. Now…Know what we are…
• We 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
1979.
• No one installs vinyl replacement windows and
thermally broken aluminum replacement
windows with more precision than our
installation pros!

10. Custom made to fit right replacement
windows
• We offer all of our windows ready for new
construction as well as for retrofit.
• We offer vinyl replacement windows,
thermally broken aluminum replacement
windows, and fiberglass replacement
windows at factory direct prices.
• 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!

11. You may still think..
“Why Thermal windows..?”
1. We manufacture right here in DALLAS
2. We install - Our Employees (Not
Subcontractors)
3. Value - Best MATERIALS @ BEST PRICE
4. You can do one window or the whole house
Simply put we are a WINDOW COMPANY
not a marketing firm. We only do windows
and we do them very well. Over 10,000
jobs completed since 1992.

12. CONTACT US:
• Dallas Showroom &
Manufacturing Plant
J & M Glass Company,
Inc.
8808 Empress Row
Dallas TX 75247
• Fort Worth Showroom
J & M Glass Company,
Inc.
3461b Blue Bonnet Cir
Fort Worth TX 76109
• Phone:(214) 630-5885
• Phone:(817) 731-8886
Visit us:
http://www.thermalwindowsdfw.com/