Insulated Glass
Insulated glass, also known as the insulated glass unit or IG Unit of a window are the two or more panes of glass separated by a spacer and assembled within the frame of a window.
As technology and manufacturing of replacement windows has developed over the years, the insulated glass unit has seen many changes in construction and construction materials used resulting in increased energy efficiency.
The thermal performance of an insulated glass unit varies according to many factors including but not limited to the thickness of the glass used, the materials used in the spacer system, gas fill (most commmonly argon gas) to replace air between the window panes, and the number and quality of coatings used in the window glazing process.
Insulated glass units are made to order. When the glass has been broken on an insulated glass unit it must be replaced by a new IG unit. Simply replacing the glass would mean loss of energy efficiency through the loss of the argon gas and glazing application on the original glass.
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