Replacement Window Glass
Knowing your window options is the first important step when shopping for windows to make sure you get exactly what you need for your home. When choosing from the varieties of glass available to you, consider your home energy efficiency goals. Once you have a clear idea of your goals, take a moment to review the different grades of glass. This next section will take you through an overview of the four basic types.
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Grades of Window Replacement Glass
Clear glass is the most popular choice among homeowners. However, you may find that you enjoy the unique style and flair of windows which feature newer techniques in cutting, glazing and custom fitting. These techniques provide you with the option of customizing your window's appearance, and a few enhancements, such as window glazing, can actually work to control condensation and heat loss.
Heat-absorbing glass features special tints, which help to absorb up to 45 percent of solar energy and reduce heat gain. It is important to note, however, that a percentage of absorbed heat will still pass through via re-radiation or simple conduction.
Low-emissivity glass (Low-E) has a surface coating that helps to reduce any heat transfer coming back through your window. Surprisingly, this unique coating reflects 40 percent to 70 percent of transmitted heat. Most people are happy to learn that this type of glass, while very efficient, does not hinder the normal amount of light that passes through the glass and into your home.
Reflective glass is popular among homeowners, who wish to control their solar heat gain in the summer. Reflective glass helps them accomplish their goals because it is coated with a film that is reflective, hence the name. This grade of window glass also helps to reduce the passage of light, as well as solar transmittance.
