Four Pillars of a Great Replacement Window Experience: Window Glass (Part I)
As discussed in our prior posts about replacement window frames, there are four key pillars to ensure you have a great replacement window experience. Like a table with a missing leg, your satisfaction will collapse if you are missing one of these supports. In this two-part series, we will discuss the importance of the glass in your windows.
The windows in your home are mostly glass. It’s clearly the defining element of your window. It’s the reason we have windows in our homes. Without glass, your window would simply be a big hole in the wall through which heat and cold, precipitation, debris, insects and other intruders would enter your home. And, in fact, at one time, that’s all a window was — a hole in the wall to let in light.
A History or Window Glass
Window glass has come a long way since transparent glass was invented, some say back in 3500 BC in Mesopotamia. Whatever its origins, the original transparent glass used in windows was a very expensive custom-made product available only to the most wealthy. And even then, it was a far cry from what we know today as window glass. Fortunately, the price availability and performance of window glass has changed dramatically from those early days.
Modern Window Glass
Modern Insulated Window glass is a relatively new invention. Not so long ago, all windows used single-pane glass. To help reduce heat loss through the windows, storm windows were developed. A precursor to today’s insulated glass, storm windows were an additional piece of glass added to the inside or outside of a window to create a pocket of air that helped reduce extreme thermal transfer in winter. Although they added some thermal efficiency, storm windows were not air tight and allowed drafts through the windows. In some cases these storm windows did little to eliminate icing on the interior window surfaces.
Insulated Window Glass
In about the 1930s, primitive insulated glass was developed. Then, in the 1950s, more advanced insulated glass started to be widely commonly used in the United States. An Insulated Glass Unit is known in the industry as an IGU, and consists of two pieces of glass separated by a spacer. The two pieces of glass are sealed to the spacer to create “Dead Space” insulating air between them. This single unit is then mounted in the window frame or “sash”. The IGU is further sealed to the window, preventing drafts, air and moisture infiltration between the panes. As a sealed part of the window, the modern IGU prevents air movement between the glass and window frame and sash and provides the insulating properties we’ve come to expect from today’s high performance windows.
Next Up: Advances in Insulated Window Glass
In our next post in this series, we’ll discuss the creation technological advances in the Insulated Glass Units that provide additional comfort, convenience and durability in today’s high performance windows.
For more information about the glass used in Renewal by Andersen of Long Island replacement windows, contact us at 1-877-313-9052 or fill out the short form on the top of this page. Our friendly representatives will be happy to answer any questions you may have.