What Is a Layered Window?

Double Pane Windows

• Double pane windows use two separate layers of glass instead of a single layer. Between the two panes is a space filled with either air or argon gas. The primary benefit of a double pane layered window is increased insulation. The space between the glass serves as a barrier to thermal transmission, keeping warm air in during the winter and cool air in during the summer.

Privacy Windows

• Privacy windows use a layering approach to provide both light transmission and privacy using an electric current. These modern windows feature several layers, including a layer of liquid crystals similar to a flat-panel television or computer monitor. When a charge is applied, the windows become clear and residents can receive sunlight or see outdoors. When the charge is turned off, the windows become opaque and provide privacy and limited light transmission.

Window Cladding

• Windows are also identified by the type of material used to make their frames. Fiberglass, vinyl and wood windows are all common for home construction. Aluminum clad windows take a layered approach to window construction. These feature frames that are made from wooden cores with thin aluminum cladding. The aluminum is highly durable and can be produced in a variety of colors. The wood core cuts down on window cost and weight. As with other types of layered windows, aluminum clad windows deliver the key advantages of the two different materials of wood and aluminum.

Considerations

• Adding layered windows to your home generally involves a major expense, especially if you elect to install all new windows rather than simply replacing a damaged one. Some layered windows, such as double pane windows, may qualify you for energy-efficiency tax credits. These windows will also reduce your home heating and cooling costs, partially offsetting the purchase price.

  Layered windows may also increase the value of your home. Some new technologies, such as layered privacy windows and layered windows that incorporate solar energy collection, are available for residential use but are very expensive and are unlikely to pay for themselves over time.