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The Curious Bag
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A double-glazed window consists of two panes of glass with air between them. A drying agent is added between the two panes of glass to ensure that no moisture can enter the space.
How It Works
The efficient windows collaborative reports that double-glazed windows cut heat loss in half when compared to traditional single-pane windows. This occurs due to the insulating effect of the layer of air in the double-glazed windows.
Good For The Environment
Much heat is lost through windows. When double-glazed windows are installed, heating bills are cut anywhere from 10 to 20 percent.
Moisture Must Be Avoided
If condensation appears between the two panes, the window cannot be repaired; it must be replaced.
Home Security
Double-glazed windows are harder to break than normal windows. Many home invasions occur through windows, so changing to double-glazed windows increases home security.
Double-Glazing Film
If a house is fitted with traditional single-pane windows, it is possible to inexpensively get the double-glazed effect by adding double-glazing film. The film is placed over the window and then stretch it flat by going over it with a hair dryer.
Source:
wisegeek.com. what is double glazing
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