Green Roof/
Rooftop Gardening
Course: Econ. 2505
Prof. S. MacDonald
Prepared by: Amit Rabadia
What is a green roof?
A green roof is a roof of a building that is partially or
completely covered with vegetation and a growing
medium, planted over a waterproofing membrane.
Commonly used vegetation plants
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Sedum Kamtschaticum
Sedum spurium
Sedum Album
Sedum sexangulare
Sedum reflexum
Allium schoenoprasum
Sedum rupestre 'Angelina'
How does it work to cool structures?
 Green roof uses plants to cool a building in summer by absorbing CO2 from
the air and reduce storm water runoff which contributes to urban flooding.
 The multi-layered roofing systems insulate the building against heat and
reduce costs of cooling the building.
The plants that make up the outside layer of the system protect the inner
roof layers from UV rays. According to Intrinsic Landscaping, Inc, a leader in
the green industry, UV protection can extend the life of your roof by 40 —
60%.
Mother Clara Hale Bus Depot
LEED certification featuring:
 a green roof that uses plants to cool the facility, absorbs CO2 from
the air, and reduces storm-water runoff;
thermal insulation to save energy and reduce emissions;
a solar wall that serves as a passive heating device;
rainwater collection for water treatment to wash buses;
cost-effective and energy efficient Heat Recovery Units on the roof
for a heat exchanger and;
 a high efficiency white roof that will prevent heat gain in warmer
weather, but will not reflect light onto nearby buildings or cause
glare.
L.E.E.D.
• LEED, or Leadership in Energy & Environmental Design, is a green
building certification program that recognizes best-in-class building
strategies and practices.
• LEED certified buildings save money and resources and have a
positive impact on the health of occupants, while promoting
renewable, clean energy.
• Getting certified allows you take advantage of a growing number
of state and local government incentives, and can help boost press
interest in your project.
Green Roofing Helps!!
•Storm water Management Rate, Quantity, and Treatment
•Design to Reduce Heat Islands
•Water-Efficient Landscaping
•Energy and Atmosphere - Optimizing Energy Performance
•Innovative Wastewater Technologies
•Water Use Reduction