What are Double Glazed Windows?

by | Jan 17, 2014 | Construction and Maintenance

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Windows that consist of two panes of glass which are held in a common frame, separated by a gap which is filled with an inert gas and then completely sealed are called double glazed windows in Honolulu, HI. The two panes of glass, separated by a gas filled void provide a superior barrier to the temperatures outside; regardless of whether this is cool air or hot air. Normally the glass that is used is coated with a special material that re-radiates the heat in cold climates and prevents heat from entering the room in hot climates. Originally, double glazed windows were found almost exclusively in cold climates but today they have found to be equally effective in warm climates.

Many different types of glass can be used in the construction of double glazed windows in Honolulu, HI, the glass can be simply clear pane glass or decorative. The most common glass is low emissivity, high performance glass which has an almost invisible metallic layer in the glass and then coated with unique coatings which are used in areas with variable climates. There are three types of Low-E glass; high solar gain is used where the summers are cool and the winters are extremely cold; moderate solar gain glass lets in less heat without losing any light and is found in areas where both the summers and winters are mild. Low solar gain glass provides the most protection from UV rays and is tat which is used in areas where the summers are exceedingly hot and the winters are very mild.

Although it is recognized that air is a good insulator, it is not as good as either argon or krypton, two inert gases which are used between the panes of double glazed windows. These gases let less heat escape in the winter and less cold to enter because they are denser than air. Factory made double glazed windows are air tight between the panes which provides additional insulation, the seal also assures that there will be no condensation between the panes.

Double glazed windows certainly enhance the looks of a house and as such they add to the value in the event the house is sold. The greatest benefit though is the amount of energy that is saved to both heat and cool the interior, an added benefit is their ability to dampen sound.

New and replacement double glazed windows in Honolulu, HI are available from CCI Window Company.