Monday, April 16, 2007

Building Green Roofs



More on Green Roofs and choice of plants

Plants are what make green roofs. They're a combination of a waterproof membrane along with a root barrier, a drainage layer and the growing medium and a variety of plants, grasses, sedums, cactus or shrubs. The area or climate affects the choice of plants used on the green roof. Drought tolerance is a significant factor because you want the green roof to require as little care as possible. Drought tolerant plants don't need to be watered so much.
Green roofs, also called 'vegetative roofs’ are living plants installed on top of conventional roofs. There are two types of green roof designs, extension and intensive. Green roofs are lasting ecosystems that imitate many of the processes found in nature. Remember a green roof can keep buildings cooler, save energy, extend the useful life of the roof, and add beauty and usfullness to a space.
from Dr Kendra Acre

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