The double glazed window must have been invented by someone that was tired of struggling with the awkward, bulky and heavy storm windows. These storm windows were installed over a single pane window on home in the fall and removed in the spring. They were used to keep the rooms comfortable during winter time by eliminating cold air and air drafts.
Double glazed windows are simply windows with two panes of glass in a sealed unit. The glass panes are separated 1/4 inch to 3/4 inch of air space. It is the combination of the glass and the airspace that increases the energy efficiency of the window. Heat is transferred between objects of different temperatures. The single pane window allows the heat to pass easily from the warm inside to cold outside during winter months and the outside heat to come inside during the hot summer months. By slowing this heat transfer down with two panes of glass and the airspace, the utility bills are reduced and the temperature of the room remains constant without the cold or hot spots.
The glass is in a sealed unit and can be installed in any frame desired. This unit will last until the homeowner decides to replace it or it breaks. In all other aspects these windows are the same as a single pane window, these are clear to see through and only the outside panels of glass need to be cleaned. Because it is a sealed, nothing gets inside the two glass panes. Windows purchased today have a R rating which has to do with heat transfer. The higher the rating the more energy efficient the windows are. In addition, the added layer of space and glass reduce any noise pollution from the outside.
Double glazing windows are a great way to increase comfort in a room and decrease the utility bills.
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