Low-Slope Flat Roofs
The slope is the incline of a roof. A low-slope roof or commonly refered to as a flat roof, is a roof with a slope of less than 3 inches per foot. Commercial and industrial public buildings usually have low-slope roof systems. Low-slope roofs are commonly found on commercial and industrial warehouses and factories, but are also found on many apartment buildings and townhouses as well.
Why Low-Slope Roofs are Not Completly Flat
Low-slope roofs are constantly referred to as flat roofs, though they are not exactly flat. They may appear to be flat, but most roofs on commercial buildings have at least a small slope of 0.25 inch per foot. The reason why these roofs have a slope and are not completely flat, is to allow water run off. It’s important that the roof has a good drainage system, so that water will run off, and not cause ponding. Ponding is when large puddles of water stay on a roof for an extended period of time. The slope of a roof is designed to assist the drainage system to avoid problems associated with ponding water.
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