Understanding Low-E Glass on Your Windows

Windows are ideal energy-saving solutions for your home. They provide insulation because of its components, mainly the glass. Through advancements in technology, manufacturers have developed low-E glass for solar and thermal performance.

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How Does It Work?
When your windowpane absorbs heat or light energy, it radiates it back. This process is called emissivity. The amount of heat radiated depends on the emissivity value and temperature of surfaces. Windows with low emissivity values are better insulators, and this is due to low-E glass.

Low-E glass has a coating that minimizes the amount of ultraviolet (UV) and infrared light that passes through, without compromising visible light transfer. St. Charles, Missouri, energy efficient windows with this type of glass reflects interior temperature back inside your home. This way, cool or warm air will not escape through your windows.

The coating affects the overall performance of all types of windows, including casement windows in St. Charles, MO. This means that it affects the following performance ratings:

  • U-value – This measures how much heat is lost in your windows.
  • Visible light transmittance – This rates how much light passes through the glass.
  • Solar heat gain coefficient – This is the fraction of solar radiation that your window lets pass through.

Where Can You Get Windows with Low-E Glass?
Renewal by Andersen® of St. Louis is your leading source for energy efficient windows. Our windows come with different glass packages that offer heating, cooling, visible light transfer, and UV protection benefits:

  • High-Performance™ Low-E4® – This is our standard offer for every windows installation in St. Charles, MO. This is 45% more efficient in winter and 56% more efficient in summer. It can also block up to 83% of UV rays that cause furniture fading.
  • High-Performance Low-E4 SmartSun™ – You can choose this option for most energy savings. It offers 47% efficiency in winter and 70% efficiency during warmer months. It can also block up to 95% of UV rays.
  • High-Performance Low-E4 Sun – You can choose this glass to reduce solar heat gain and visible light transfer.

Our glass and our insulating Fibrex® frames can help your home save energy. If you want to learn more about our products, call us today at (314) 332-2364. You can also reach us through our contact form.

Call for FREE Estimate on Replacement Windows and Doors

For a window replacement project you can trust, you need a contractor you can trust. In St. Louis, that contractor is Renewal by Andersen of St. Louis. Call us today at (314) 332-2364 for a FREE in-home consultation with our home improvement experts.

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