Forum discussion
NC-2009 SSc7.2: Heat Island Effect—Roof
It may be a silly question.
If both both low sloped and steep sloped roof material is same, why steep sloped roof requires lower SRI paint?
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We don't know the SRI value of some roofing materials we are using. What should we do?
Do balconies and terraces need to be counted towards the roof square footage?
How does one calculate the square footage of a pitched roof?
Heather Holdridge
Sustainability DirectorLake|Flato Architects
111 thumbs up
April 14, 2014 - 11:04 am
The material for steep-sloped and low-sloped roofs on a single project do not have to be the same, but if they are, they need to meet the more stringent requirements of the low-sloped roof. Low-sloped roofs are subject to more stringent requirements because for buildings with a large roof area relative to building height, the roof surface area is the main source of heat gain to the building. It is much more critical in these applications to use a "cool roof."