Purchasing a Double Glazed Window

Windows bring the two worlds together by allowing interaction between what is happening on the outside and inside worlds. Windows allow the occupants to bring in the outside and feel as if it has become part of the interior. However, on the more practical side of things, they also keep the inside and outside worlds separate. And there is no better way to be practical than to choose a double glazed window. While there are other window choices available such as half glazed or single glazed, they do not provide the same safety, security or style.

Glazing is the glass portion of the window. Older buildings often have windows that are single glazed while most newer building will be constructed with a double glazed window. Double glazing is a process by where a window is formed by spacing two panes of glass several millimeters apart. This arrangement, when sealed, traps air in between the panes thereby forming an insulating layer. Prior to the unit being sealed, a drying agent such as silica gel is added to insure no moisture exists in the finished unit. The space between the panes is then filled with a noble gas such as argon, krypton or xenon with most manufacturers using argon gas as it is the most economical.




The frames for a modern day double glazed window are commonly made of uPVC, aluminum or wood. uPVC frames are considered to be the most durable frames for double glazing installations and have become a very popular choice in replacement windows. Aluminum frames, once the most popular, have lost favor in recent years with the introduction of the uPVC frames. Although aluminum frames are extremely strong, are virtually intruder proof and are not subject to warping or twisting, when compared to uPVC, they have relatively poor insulation performance. Wood frames are the most architecturally pleasing, however, they are the most expensive also. Wood windows also require more maintenance since they need painting every five to ten years depending on their exposure to the sun.

The double glazed window system you choose for an existing home should provide a high degree of energy efficiency. Approximately 30% of heat loss from a home is through standard windows. Double glazed windows have proven to reduce heating bills 10% to 20%. Greater savings are possible depending on a particular installation but most any installation will result in savings of 10% to 20%. In addition to the energy savings, a double glazed window will also prove to be an excellent value for your home.

When choosing replacement windows for your home, it is best to look at at least three different window systems from different manufacturers and compare their quality. Make sure the windows fit securely in their tracks and they operate smoothly. Many modern day windows allow for easy removal of the sash from inside of the home for easier cleaning. Also, ask about replacement sashes and how many years the company will guarantee replacement sashes will be available. Get this information in writing along with the rest of the warranty on these products.

Lastly, once you have decided on a company to provide your system, ask to inspect windows previously installed by the company before committing to the purchase. With proper research and diligence you should definitely find a double glazed window system that fits into your budget and meets your expectations by providing years of proper operation as well as adding beauty to your home.