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Glazing just implies the windows in your house, including both openable and fixed windows, along with doors with glass and skylights. Glazing in fact simply indicates the glass part, but it is usually utilized to describe all aspects of an assembly consisting of glass, movies, frames and furnishings. Taking note of all of these aspects will help you to accomplish reliable passive style.

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Energy-efficient glazing makes your home more comfortable and considerably reduces your energy costs. Nevertheless, improper or poorly designed glazing can be a significant source of unwanted heat gain in summer season and considerable heat loss and condensation in winter season. Approximately 87% of a home's heating energy can be acquired and approximately 40% lost through windows.

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Glazing is a considerable investment in the quality of your house. A preliminary investment in energy-efficient windows, skylights and doors can greatly lower your yearly heating and cooling bill.

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This tool compares window selections to a base level aluminium window with 3mm clear glass. Understanding some of the crucial residential or commercial properties of glass will assist you to select the finest glazing for your home. Key properties of glass Source: Adjusted from the Australian Window Association The amount of light that travels through the glazing is understood as visible light transmittance (VLT) or visible transmittance (VT).

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The U value for windows (expressed as Uw), explains the conduction of the whole window (glass and frame together). The lower the U value, the higher a window's resistance to heat circulation and the better its insulating value.

For example, if your home has 70m2 of glazing with aluminium frames and clear glass with a U worth of 6. 2W/m2 C, on a winter season's night when it is 15C cooler outside compared with indoors, the heat loss through the windows would be: 6. 2 15 70 = 6510W That is equivalent to the overall heat output of a big space gas heating unit or a 6.

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If you choose a window with half the U value (3. 1W/m2 C) (for example, double glazing with an argon-filled space and less-conductive frames), you can cut in half the heat loss: 3. 1 15 70 = 3255W The solar heat gain coefficient (SHGC) for windows (expressed as SHGCw) determines how readily heat from direct sunlight streams through an entire window (glass and frame together).

The lower a window's SHGC, the less solar heat it transmits to the house interior. The actual SHGC for windows is affected by the angle that solar radiation strikes the glass.

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When the sun is perpendicular (at 90) to the glass, it has an angle of incidence of 0 and the window will experience the optimum possible solar heat gain. The SHGC declared by glazing manufacturers is always computed as having a 0 angle of occurrence. As the angle increases, more solar radiation is shown, and less is transmitted.