Green roofs benefit the environment by soaking up stormwater and cooling sun-baked buildings. They also add natural beauty, style and design to normally barren spaces, bringing that ineffable environmental improvement called joy to the people who use and see the building. While green roofs are popular in Europe, they are less common in the U.S. because they can be heavy and expensive, as well as technically challenging to design and maintain. With the increase in diversity and quality of geosynthetic materials, however, green roofs may become a much more practical way to manage water and energy in modern buildings.
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