A
Green Roof is a layer of living vegetation that
is
installed
on the top of a conventional flat or sloping roof.
Conserve
energy by moderating temperature on roof and surrounding
areas - Dramatically
reduce storm runoff volume and peak flow rate
- Restore the ecological and aesthetic value of urban open
space
- Protect conventional roofing systems, typically doubling
the service life of the underlying waterproofing
membrane.
There
is direct and immediate benefits to the environment,
both inside and outside the building
 Source: www.roofmeadow.com
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A
Green Roof reduces temperature extremes inside
the building - This chart shows how a Green Roof
helps to stabilize the temperature inside the building.
The soil and
vegetation absorb the worst of the heat during
the day, cooling the building underneath. In addition,
daytime heat is retained after sunset, keeping
the building warm at night.
:
| |
 Source: www.greengridroofs.com
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A
Green Roof absorbs stormwater runoff
-Control
of stormwater runoff is achieved by mimicking
the processes that occur in nature, intercepting
and delaying rainfall runoff by:
- Capturing and holding precipitation in the plant foliage
- Absorbing water in the root zone
- Slowing runoff as it infiltrates through the layers of vegetated cover
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