Low-E glass is a valuable option in high quality replacement windows. It can significantly improve a window’s performance in creating a “thermal barrier” to prevent energy loss. Let’s take a look at how this remarkable technology works.
The “E” in Low-E stands for emissivity, which is the ability to emit radiant energy. Windows with a low-e coating emits almost no radiant energy. The coating is a microscopically thin – and practically invisible – metal or metallic oxide film that’s deposited on the surface of the glass during or after the manufacturing process. This microscopic layer allows light (short-wave energy) to penetrate the glass, but blocks most ultraviolet (UV) long-wave energy, which we feel as heat.
What does Low-E glass deliver that regular, uncoated glass cannot?
- Improved energy efficiency. The U.S. Department of Energy estimates that inefficient windows can be responsible for 25% of a home’s wintertime heat loss. Reducing this heat loss means your home’s heating system won’t have to work as hard to regulate the temperature inside your home. In addition to reducing heat loss during winter months, Low-E glass also reduces heat gain during warmer months, reducing the strain on your air conditioning system.
- Less UV damage. Have you ever experienced fading on the back of a sofa that is positioned by a window? That is the result of UV rays penetrating the dyes of the fabric. By blocking most ultraviolet (UV) radiation, Low-E glass helps protect fabrics, leather, carpeting and finishes from the fading effects of sunlight.
- Reduced condensation. Condensation on window glass can be a problem during the heating season, as warm air comes into contact with cold window glass and gives up its moisture, forming water droplets on the glass surface. Low-E glass can minimize or even eliminate this unwanted condensation.
How does this translate to everyday living? Simply this. During the winter, when temperatures outside are colder, a Low-E coated replacement windows admits light through the glass for illumination, but reflects heat from interior spaces back into your home. When temperatures rise during the spring and summer, Low-E glass admits light, but heat from outside is reflected, helping to reduce cooling costs.
Low-E glass is remarkable technology that deliver real-life benefits for homeowners who install replacement windows in Massachusetts. Interested in finding out more? Call Rescom Windows at (866) 410-5884 to schedule a free, in-home consultation on our low maintenance, energy efficient replacement windows.