SS c7.2: Heat Island effect—roof
To reduce heat islands to minimize impacts on microclimates and human and wildlife habitats.
Use roofing materials with a solar reflectance index (SRI) equal to or greater than the values in the table below for a minimum of 75% of the roof surface.
Roofing materials having a lower SRI value than those listed below may be used if the weighted rooftop SRI average meets the following criteria:
Install a vegetated roof that covers at least 50% of the roof area.
Install high-albedo and vegetated roof surfaces that, in combination, meet the following criteria:
Potential technologies & Strategies
Consider installing high-albedo and vegetated roofs to reduce heat absorption. Default values will be available in the LEED Reference Guide for Green Building Design and Construction, 2009 Edition. Product information is available from the Cool Roof Rating Council Web site at http://www.coolroofs.org/ and the ENERGY STAR Web site at http://www.energystar.gov/.
Roof materials of Factory 1A + Office and Parking area, low-sloped (SRI = 78)
Total area of qualifying high-albedo roof: 6,481.22 m2
Percentage of high-albedo roof: 75.41 %
=> To reduce heat islands to minimize impacts on microclimates and human and wildlife habitats.