Green Roof Advantages And Disadvantages

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Introduction
Green roof are defined as roofs that support vegetation, covering either full or partial of live plant material. At present, cities are now considering extensive planting as a mean of improving of air quality. Green roof can also be a good material tool in the environment. Most of the time, people would be confused to identify the green roof with rooftop garden, although the benefit of green roof and rooftop garden are quite similar but there are significantly differences between the two. Green roof is always put up with layered system unlike rooftop garden that has characterized by built-in planting areas for food production and can occupy a small proportion of roofs, but in other places, they made green roof as there garden. Through vegetation in some roof areas, they give better thermal performance of house and building. Vegetation will always be dependent to the soil for planting. Green roof can also be done with the help of new technologies for better planting and its application. Green roof may be uniform to look at but each of them is unique in technical performance for each of them considers many varying factors such as its region, climate, building and design. In today’s technological advances may many different types of structure can now be used for green roofing. Green roof was first built in hanging garden by the Babylonian in around seventh and eight centuries. Later then the green roof had a crossed the Europe in rural and agricultural supply.

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