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A green roof is a roof of a developing that is fully covered with plants and a developing medium, planted over a waterproofing covering. Green roof also consists of the additional layers like a root fence and drainage and irrigation systems. The use of green refers to be environmental friendly. These kinds of roofs appear stunning and also quite beneficial for environments. Green roofs are also known as living roofs. Green roofs have also numerous purposes like absorbing rainwater, producing a residence for wildlife, also green roof offers insulation. Green roofs also helps to decrease down the temperature of cities and much less the influence of heat . There are two diverse sorts of green roofs .The names are intensive roofs and substantial roofs. The intensive roofs are thicker and can support diverse range of plants. These are heavier and need to have upkeep. The substantial roofs have light layer of plants and are lighter than an intensive roofs. The word green roof might be used to specify roofs that use a couple of kind of green technologies, like cool roof, a roof with solar thermal collector. Green roofs are also referred to eco-roofs and living roofs.
Green roofs have also several environmental positive aspects. Green roofs decrease heating. Green roof reduces storm water. They filter the pollution and helps to lower the ailments which are related to breath like asthma. They also filter heavy metals from the rain water. It also increases the agricultural place. Green roofs have also financial benefits. it enhance the roof life time noticeably It also increase the value of genuine estate. European Countries have very active in promoting green roofs. The nations are Germany, Switzerland, the Netherlands, Norway, Italy, Austria, Hungary, Sweden, the UK, and Greece.
Green roofs are also becoming very popular in Chicago , Portland, Atlanta and other cities of united state. Green roofs popularity is growing in Australia day by day from final 10 years. The biggest project of green roof was announced in Australi in 2010 name was The Victorian Desalination project.
In Canada these roofs are also well-liked. The city of Toronto has numerous green roofs on residential and industrial buildings. These are also utilized in Switzerland, France, Iceland, Sweden, United Kingdom, United States of America. The cost of appropriately designed green roof system is virtually can be 15 to 20 dollars per square feet. These are pricey. In Europe totally installed roof can be cost between one hundred to 200 Euros. Green roofs have low upkeep needs. Maintenance of green roofs often involves fertilization to improve peak and juicy plant cover. Extensive green roofs are fertilized with controlled-release fertilizers in order to steer clear of pollution of the storm water. Standard fertilizers can not be employed on extensive roofs. The primary disadvantage of the green roofs is larger price and the other is that some current constructing structures can not be converted in to green roofs. There are also few green roofs which have little maintenance cost. Infact, green roofs are environmental friendly and their installation can make atmosphere green and clean.
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