Glazing and NatHERS
Double glazing can help improve a NatHERS rating, but it is not a guaranteed solution on its own. Whether it helps a project reach 7 Stars depends on the climate, orientation, window size, shading, frame type and the rest of the building fabric.
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Windows can have a drastic effect on the thermal performance of a building. Up to 40% of a home’s heat can be lost through conduction or radiation at the window, and up to 87% of its heat can enter through solar gain. This unwanted heat flow can be devastating for the energy efficiency of any project.
