But improving your glazing through renovation is one of the easiest ways to significantly improve the thermal performance of your home without rebuilding. Glazing decisions are usually made when you are buying or building a new home.You will need to pay attention to orientation, thermal mass, insulation and weather sealing to get the best performance. Glazing needs to work together with other passive design features of your home to ensure good thermal performance.You can also use the Australian Glass and Window Association tool to calculate the potential savings that may be achieved by energy-efficient glazing. Use the Window Energy Rating Scheme ratings to compare the performance of windows, doors and skylights. Both single and double or triple glazed units will allow good solar heat gain, but double or triple glazed units are better at preventing heat loss.There are many different types of glass and frame, and different combinations, to choose from.The thermal performance of a window, door, or skylight depends on how well the glass and frame conduct heat (conduction or U value) and how well the glass and frame transmit heat from direct sunlight (the solar heat gain coefficient or SHGC).Improving the thermal performance of your glazing will increase your home’s comfort and reduce energy consumption, therefore lowering costs and greenhouse gas emissions.Up to 40% of a home’s heating energy can be lost and up to 87% of its heat gained through windows.
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