The History of Green Roofs
While primitive green roofs were made in places such as Scandinavia, where grasses were piled onto framed structures, modern-day green roofs have mainly evolved in Europe, where government incentives have led to a burgeoning green roof market. Does this Spark an idea?
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History
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Centuries ago, Scandinavians built roofs constructed of heavy timbers and birch bark for a waterproofing layer, then created green roofs when they covered them with sod from the nearby fields for insulation.
Identification
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It wasn't until 1970 that German landscape architect Hans Luz began advocating the potential of green roofs as an environmental solution in the urban environment.
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Significance
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In 1975, the German Landscape Research, Development and Construction Society was created. This landscape construction organization was one of the first to open a formal study and inquiry into green roof technology, and its potential.
Features
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In Europe, green roof technology has become well established in the past 20 years. In Germany, 13.5 million square meters of green roofs were constructed in 2001, which was up from 9 million in 1994.
Considerations
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One of the main reasons cited for the fact the green roof industry has flourished in Europe while remaining fairly stagnant in North America is the presence of strong government legislative and financial support, and the respective lack thereof at local and state levels.
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