InnovativE®
Your Invisible Barrier
When you consider energy efficiency, perhaps the most critical part of any window is the insulating glass system. It only makes sense: the glass has the largest surface area.
Windows Can Help
To understand how windows can help, you must first understand that energy is lost through windows in three major ways: conduction, convection and radiation.
Conduction
The framing of all Windgate windows is made from vinyl, a natural insulator. To prevent energy loss through conduction, all insulated glass units utilize Duralite© “warm edge” technology. Using a low-conductance spacer, this method assures maximum resistance to energy flow.
Convection
Energy can also be lost through natural convection currents that can form within the insulating glass. That's why windows® glass is 3/4" thick, shown by government testing to be the optimum dimension to prevent these convection currents.
Radiation
Radiation occurs when long wave heat energy moves toward cold areas.
The most effective barrier to radiation is an optimal special Low "E" coating, a standard part of our InnovativE® glass.
This special coating actually reflects the long wave radiation back to its source.
This is important to understand, as radiation affects energy consumption, no matter what part of the country you call home.
Solar Gain vs. Heat Loss
The concerns of home owners in the North are quite different than those in the South.
In the North,where heating is a concern, glass must allow maximum solar gain, while preventing heat loss.
NFRC RATINGS WITH TRIPLE COATED LOW E & ARGON GAS FILLED
| Product Series | Operating Style | U-Value w/ Low-E & Argon Gas | Solar Heat Gain Coefficient |
|---|---|---|---|
| windows | Double Hung | 0.27 | 0.21 |
| windows | Double Horizontal Slider | 0.27 | 0.21 |
| windows | Casement/Awning | 0.26 | 0.20 |
| windows | Picture Window | 0.27 | 0.23 |
*Architectural drawings and structural tests/ratings available upon request
