Green-Roofing Systems (LEED)

Green-Roofing Information


All green roofs have the same basic structure: waterproofing membrane, soil and vegetation. The two main
catagories of green roofs depend on substrate, or soil, depth, and types of plants. An "extensive" roof has
a thin layer of soil in which mosses and other shallow-root plants live with little maintenance. "Intensive"
roofs have larger vegetation that is planted in deeper soil. These green roofs sometimes require irrigation
systems, since they are more like gardens.

Below is a diagram of how a green roof works:




Green roofs can be constructed both pitched and flat, with some restrictions on soil depth. Studies
have shown these roofs to be environmentally and economically beneficial in numerous ways. One
such way is that the mini-climate around a green-roofed building is cooled and regulated by plant
shading and photosynthesis. These same plants protect the underlying roof and create niches for
city-dwelling species.

Green roofs benefit economies since they require skills of landscape construction companies,
irrigation experts, and other small businesses. Green roofs also benefit our planet in ways of the
reduction of air pollution, they capture 45% of rainfall runoff (standard roofs only capture 9%), they
save energy by creating a cooling effect, and they are very easy to maintain.


Below is a photo of New York's many green roofs:





If you would like to read more about the benefits of converting to a green-roofing system
and how this will save you money, please
Click Here


View our Environmentally Friendly "Green" Resources

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