Greening With Daylighting

July/August 2006
A version of this article appears in the July/August 2006 issue of Home Energy Magazine.
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July 01, 2006
        Daylighting: A method of illuminating building interiors with natural light so that the use of artificial lighting is reduced in the daytime. Common daylighting strategies include the proper orientation and placement of windows, use of light wells, light shafts or tubes, skylights, clerestory windows, light shelves, reflective surfaces and shading, and the use of interior glazing to allow light into adjacent spaces.         Most of us who cut our eye teeth in building performance matters while on the weatherization route regularly approach the issue of windows as if it is a necessary evil. In even the most energy-efficient exterior wall or roof, windows and skylights are the biggest source of energy loss. For years, we struggled to find ways to install them so that they don’t leak moisture. In older homes they are a constant maintenance headache. We relented a little when we learned that air sealing all the places where air can leak through the top ceiling planes could reduce air leakage through the windows, but the discomforts and challenges that they present still keep builders suspicious.         Ironically, skylights can ...

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