A green roof is basically exactly what it sounds like –it is a roof designed to be covered in vegetation. Green roofs (which were actually long popular in Europe) have begun to appeal to homeowners, businesses, and even entire cities as a visually-appealing way to solve the problem of conventional roofs (such as drainage issues) while promoting environmentalism. Over time, green roofs can improve air quality and help reduce the heat that tends to wrap around highly-populated urban areas (also known as the Urban Heat Island Effect).
Green roofing, first made popular in Europe, is gaining support in the U.S. Used as an alternative to traditional black roofing, the goal of green roofs is to make an empty space useful. Green roofs have many environmental benefits. Suburban and urban areas are susceptible to heat trapping, a problem that may be offset by green roofing. Green roofs can also serve as a natural insulator and absorb storm water. In addition to their environmental benefits, green roofs may also last longer than traditional roofs, making them a cost-effective option.
For more information on green roofs see this related question:
One really cool example of a green roof is the Living Roof at the California Academy of Sciences. The idea behind the roof was to make it appear that a rectangle of the Golden Gate Park was cut out and lifted up and the Academy was slid in underneath. There is a multitude of native plants growing on the 197,000 square foot rooftop. Unlike a typical black, tar-and-asphalt building roof that traps heat and raises the temperature in cities, the Living Roof helps to regulate the temperature of the building as well as mitigate the amount of carbon released by the building as the plants consume it and release oxygen.
Green roofs, broadly implemented in Switzerland, Germany, and other European countries also in Canada, are becoming increasingly well known in the US. Green roofs can help to counteract the effect of solid surfaces in urban areas. Impervious surfaces, including roads, sidewalks, parking lots, rooftops and runways are typically constructed of impenetrable materials like concrete and stone, asphalt, which keep away water and prevent precipitation from seeping into soil.
Commercial Parking Lot Sweeping
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