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Glazing just suggests the windows in your house, including both openable and set windows, in addition to doors with glass and skylights. Glazing actually just implies the glass part, but it is usually used to refer to all elements of an assembly including glass, films, frames and home furnishings. Paying attention to all of these aspects will assist you to attain reliable passive style.

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Energy-efficient glazing makes your house more comfy and drastically reduces your energy costs. Improper or improperly developed glazing can be a significant source of unwanted heat gain in summer season and significant heat loss and condensation in winter. Approximately 87% of a house's heating energy can be gotten and approximately 40% lost through windows.

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Glazing is a significant investment in the quality of your home. The expense of glazing and the expense of heating and cooling your home are carefully associated. An initial financial investment in energy-efficient windows, skylights and doors can considerably reduce your yearly heating & cooling bill. Energy-efficient glazing also lowers the peak heating and cooling load, which can lower the required size of an air-conditioning system by 30%, leading to further expense savings.

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This tool compares window selections to a base level aluminium window with 3mm clear glass. Comprehending a few of the essential residential or commercial properties of glass will assist you to choose the very best glazing for your home. Secret residential or commercial properties of glass Source: Adapted from the Australian Window Association The amount of light that goes through the glazing is referred to as noticeable light transmittance (VLT) or visible transmittance (VT).

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

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 colder outside compared with 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 large room gas heating system 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) measures how easily heat from direct sunshine streams through a whole window (glass and frame together).

The lower a window's SHGC, the less solar heat it transfers to your home interior. Glazing manufacturers declare an SHGC for each window type and design. However, the real SHGC for windows is affected by the angle that solar radiation strikes the glass. This is referred to as the angle of occurrence.

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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 stated by glazing makers is always determined as having a 0 angle of occurrence. As the angle increases, more solar radiation is shown, and less is sent.