Insulated Glass

  • Solar Heat Gain Coefficient - The rating for amount of heat that is allowed through glass

Energy Saving Glass Systems by

We guarantee the energy savings. When you replace the windows in your home with JWS Window and Patio Door Systems you’ll enjoy greater peace of mind knowing that you’ll experience savings on the energy necessary to heat and cool your home. We stand behind the fact that you’ll use less energy and save more money all while enhancing the beauty of your home both inside and out.

Click on the images below for a closer look at some of our top-performing insulated glass packages.


Vanguard’s XLEdge Spacer System takes high-performing spacer technology to an entire new level. Glass systems featuring the XLEdge Spacer System reduce condensation around the perimeter of the window.

Our Glass Really Stacks Up

The glass on different brands of windows may look the same, but it’s amazing the energy our 8 layers of high-performance metallic shields will save you. You can’t see them, but they’re working for you, night and day, winter and summer.