In addition to the thick insulation, the new building will use a reflective white roof, as seen on left. Reflective roofs can significantly lower the cooling load of buildings and save electricity by reflecting heat back into space. Because the building needed a new roof to replace the leaking existing one, a white roof is a very cheap energy efficiency measure. The Department of Energy has a program to put on white roofs during re-roofing projects at DOE buildings.
May 23, 2011 4:00 AM PDT
Photo by: Martin LaMonica/CNET
| Caption by: Martin LaMonica
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