Compared to single-pane glass, insulating glass panes are part of a sealed system you cannot replace on an individual basis. Insulating glass is also referred to as “double-pane glass windows” or “double glazing.”
Insulating glass is made up of four separate components:
1. Spacer—Insulating glass includes a spacer that separates the two panes of glass where they come together at the frame. Usually, the spacer includes some sort of desiccant to absorb moisture to prevent mold buildup.
2. Window frame—The window frame can vary depending on the type of windows. For example, you can use insulating glass in casement windows, picture windows, double hung windows, and skylights to prevent heat loss.
3. Glass—The actual glass within an insulating glass unit can vary when it comes to thickness and type. For example, tempered or laminated glass may be installed in areas where strength and safety are priorities.
4. Gas—Generally speaking, insulating glass has some type of gas between the two glass panes. Types of inert gases used can include krypton, argon, or a mixture of both to create an insulating barrier between the outdoors and indoors.
Windows are a huge source of energy loss in any home or building. Insulating glass units prevent much of this energy loss, allowing you to lower your energy bill while making it easier to maintain a comfortable indoor temperature. The performance of an insulating glass window depends on the thickness of the glass and the space between each individual pane.