At Renewal by Andersen®, we regard glazing as one of the most important components of our replacement windows and patio doors. This is why every single replacement window unit we have features High-Performance™ Low-E4® glass, available in three different glass packages.
Here’s a detailed look at each.
One of the challenges of building energy efficient replacement windows and patio doors is the glazing. Glass is a naturally conductive material, and conventional means of insulation would defeat the purpose of having glass panels in the first place. Traditional single-panel glazing has proven to be a problem, as it readily facilitates thermal transfer that leads to heat loss in the winter and heat gain in the summer.
The solution is a dual-panel design. Two glass panels separated by insulated spacers eliminate contact between interior and exterior surfaces, dramatically reducing conductivity. When combined with low-emissivity (Low-E) coatings, dual-panel glazing provides a simple yet effective solution against thermal transfer.
Dual-panel glazing has since become standard on every energy-efficient window style we offer, from the humble double hung window to oversized window walls. Our replacement windows are certified by the National Fenestration Rating Council and ENERGY STAR® for energy efficiency.
Our Glass Packages
As stated above, we offer three glass packages:
- High-Performance Low-E4 glass – Our standard glass packages have advanced features that put them ahead of most dual-panel glazing in the market. The Low-E4 coating blocks up to 84% of harmful UV rays. We fill the space between with an insulating custom argon gas blend. This glass package features up to 45% and 56% more energy efficiency in winter and summer, respectively, compared with ordinary dual-panel glazing.
- High-Performance Low-E4 SmartSun™ glass – Our most energy-efficient glass package features 70% energy efficiency in summer and 49% in winter. If you’re worried about the effects of direct sunlight on your fabrics and furniture, choose this option; it blocks 95% of UV rays while admitting light just like clear glass.
- High-Performance Low-E4 Sun glass – Sometimes natural light can be too bright for comfort. Our High-Performance Low-E4 Sun glass features a subtle tint that tames harsh sunlight without sacrificing energy efficiency.
To learn more about how our glass packages work on our window styles, including picture windows, call Renewal by Andersen of Milwaukee today at (262) 522-3034 or fill out our contact form to schedule your free in-home consultation. We serve many areas in and near Waukesha.