What to look for in buying windows

Attractivewindowscan enhance the appearance of your home, increase its energy-efficiency and comfort and increase itsvalue.

But weighing functionality, aesthetics, placement, price and efficiency can be daunting. There are a slew of things to consider.

Understanding the terminology used to describe various windows will help you make your decision. Here are common words and phrases you are likely to encounter:

Window glazing: The actual glass in a window is called glazing. Many homes and older buildings have a single pane of glass within each frame. It is a traditional style, but isnot energy-efficient.

Double-glazed windows are the popular option. There are two panes of glass in a frame. The gap between the panes acts as a layer of insulation. It improves the window's ability to maintain the building's temperature.

Sometimes, newer structures have triple-glazed windows. They are more expensive, but they also provide additional insulation benefits.

R-values: R-values measure the amount of heat a window loses through its glass panes. Higher R-values mean more energy efficiency. An R-value of 3 is very desirable.

U-values: U-values tell you the level at which a window conducts heat. The lower the U-value, the better.

People who live in wintry climates (that's the Quad-Citiy region) should choose replacement windows with strong R-value and U-value ratings to conserve energy.

Low-e: Low-emissive, or low-e windows are the latest innovations in the energy-efficiency market.

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What to look for in buying windows