Glazing: This word can have two meanings: 1) the glass in a window or door, and 2) the act of installing glass in a window or door. It’s likely you’ll hear this term most frequently in reference to the first meaning. Think of it as a synonym for window glass.
Pane: A sheet of glass in a window. Single-pane windows include one sheet of glass, dual-pane windows include two sheets of glass, etc. The first definition of light/lite (see above) can also be used as a synonym for pane.
Single-pane glass: One sheet of glass between indoors and outdoors. Often windows with this type of glass are paired with a storm window because they’re not well insulated. You might find this in an older home.
Dual-pane glass: Two panes (or sheets) of glass with an air space in between. This type of window glass is better at insulating than single-pane glass and is a standard offering on all our windows. It’s also required by most building codes.
Triple-pane glass: Goes one step further than dual-pane and includes an additional pane (or sheet) of glass and an additional air space, making it the most energy-efficient glass type. Triple-pane glass is an option on our A-Series and E-Series windows.
Air space: Found in between the panes of glass on a dual- or triple-pane window, this feature helps insulate the home against the elements. Typically, air spaces on our windows are filled with an argon gas blend that’s denser than air and therefore improves insulation. Note: Windows can also be ordered with air fill and high-altitude capillary breathing tubes, which allow for the release of pressure.
Low emissivity (Low-E) glass: Glass with a special coating that helps reflect heat and keep your home more comfortable. All our windows come standard with a Low-E coating. These coatings are ultra thin and generally transparent. There are several types of coatings suitable for various climate types. There are also coating upgrades and coating combinations available to further boost performance for a specific climate.
Want to know more about this topic? Check out “How to pick out energy-efficient windows."