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Glazing just suggests the windows in your house, including both openable and set windows, as well as doors with glass and skylights. Glazing really just means the glass part, but it is normally used to refer to all aspects of an assembly including glass, films, frames and furnishings. Paying attention to all of these aspects will help you to achieve reliable passive style.

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Energy-efficient glazing makes your home more comfortable and considerably minimizes your energy costs. Inappropriate or improperly created glazing can be a significant source of undesirable heat gain in summer season and considerable heat loss and condensation in winter season. Approximately 87% of a house's heating energy can be gained and approximately 40% lost through windows.

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Glazing is a substantial investment in the quality of your home. A preliminary investment in energy-efficient windows, skylights and doors can significantly lower your annual heating and cooling bill.

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This tool compares window choices to a base level aluminium window with 3mm clear glass. Comprehending a few of the essential homes of glass will assist you to select the very best glazing for your house. Key residential or commercial properties of glass Source: Adjusted from the Australian Window Association The quantity of light that goes through the glazing is called noticeable 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 much better its insulating worth.

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

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

The lower a window's SHGC, the less solar heat it transfers to the home interior. Glazing producers state an SHGC for each window type and style. The real SHGC for windows is impacted by the angle that solar radiation strikes the glass. This is called the angle of incidence.

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