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Glazing simply suggests the windows in your home, including both openable and fixed windows, along with doors with glass and skylights. Glazing in fact simply implies the glass part, but it is normally used to describe all aspects of an assembly consisting of glass, movies, frames and home furnishings. Paying attention to all of these elements will help you to attain reliable passive style.

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Energy-efficient glazing makes your house more comfortable and dramatically minimizes your energy expenses. However, unsuitable or improperly developed glazing can be a major source of unwanted heat gain in summer and substantial heat loss and condensation in winter. Up to 87% of a house's heating energy can be acquired and approximately 40% lost through windows.

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Glazing is a considerable financial investment in the quality of your home. The expense of glazing and the expense of heating and cooling your house are carefully related. A preliminary investment in energy-efficient windows, skylights and doors can greatly minimize your yearly heating and cooling expense. Energy-efficient glazing likewise decreases the peak heating and cooling load, which can decrease the required size of an air-conditioning system by 30%, resulting in further cost savings.

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This tool compares window choices to a base level aluminium window with 3mm clear glass. Comprehending some of the key homes of glass will help you to choose the very best glazing for your home. Secret homes of glass Source: Adapted from the Australian Window Association The amount of light that travels through the glazing is known as visible light transmittance (VLT) or noticeable transmittance (VT).

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This might lead you to turn on lights, which will lead to greater energy costs. Conduction is how easily a product performs heat. This is called the U value. The U worth for windows (expressed as Uw), explains the conduction of the entire window (glass and frame together). The lower the U value, the greater a window's resistance to heat flow and the much better its insulating value.

If your house 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 colder outside compared to inside your home, the heat loss through the windows would be: 6. 2 15 70 = 6510W That is equivalent to the total heat output of a big room gas heating unit 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 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 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 transmits to the house interior. The real SHGC for windows is impacted 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 producers is always calculated as having a 0 angle of incidence. As the angle increases, more solar radiation is reflected, and less is transmitted.