When you partner with OpenUp® Windows, we source the highest quality Insulated Glass Units (IGUs) from industry-leading manufacturers. Our team rigorously vets every component to guarantee top performance. Like the rest of the window, we customize your glass to perfectly fit your needs, including Low-E coatings, Argon gas fills, and laminated glass. This specialized selection ensures your windows provide superior comfort, durability, and efficiency for decades to come. Glass so good you won’t even know it’s there!
SHGC, or Solar Heat Gain Coefficient, tells you how much direct sun heats your indoor space; remember: lower numbers mean better performance.
We offer a reliable hard-coat standard, but for superior insulation, we recommend double- or triple-silver soft coatings. In sunny climates and the southern states, choose triple-silver coatings—they deliver maximum solar protection and efficiency.
The standard option for OpenUp® is 1″ thick insulated glass. The “IG” package is made up of two pieces of 3/16″ tempered glass for safety separated by a black spacer. This creates a 5/8″ thick air pocket between the two layers—doubling the insulation over a single pane of glass. We also offer argon gas to replace the air between the two panes of glass which adds additional insulating value.
The insulating value of the glass is increased by adding a very thin metal layer to the inboard layer of the outer pane. This layer reflects long-wave heat radiation. U-value is the conductivity rate of the glass and is the inverse of the insulating value. The lower it is the better the insulating value.
If you need more information, we are only a phone call or email away.
Save 5% on your Order this Fall
Your discount will be applied automatically when you place your order before end of November 2025
