Concepts In Passive Design #1 Roof Overhangs
A major source of heat in buildings is direct solar radiation through windows--welcome in cold weather, but a problem in hot weather. Since Florida has such a lengthy cooling season, it is most important to protect windows from the sun; however, there are times between November and March when some heat is needed. Fortunately, the change in the sun's path from summer to winter is such that a properly designed roof overhang can protect south-facing windows from the high summer sun, yet allow the lower winter sun to come in.
Buildings - Roofs
Florida Solar Energy Center and Fairey, Philip, "Concepts In Passive Design #1 Roof Overhangs" (1980). FSEC Energy Research Center®. 1678.