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FAQs about SSc7.2 :

We don't have enough SRI-compliant roofing to earn the credit, but we have a lot of relatively high-SRI roofing (SRI 70). Is there any way to earn the credit?

We don't know the SRI value of some roofing materials we are using. What should we do?

What do I do about roof area covered by solar panels, skylights, space for occupants, helipads, etc.?

Speaking of appurtenances, there is a rooftop pool. Should that be included? Do I need to figure out the SRI value of water?

Do balconies and terraces need to be counted towards the roof square footage?

How does one calculate the square footage of a pitched roof?

What type of ongoing maintenance of the roof is required?

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CS-2009 SSc7.2:Heat Island Effect—Roof

PV Panles over compliant white membrane with a high SRI

Hi Everyone.

I have an array of pv panels that will be installed over a compliant white membrane with a high SRI.
How should I count that area?
I know that I can exclude the area covered by pv panels (appurtnances), so that means I can not count the total area covered with the high SRI  membrane? (membrane - the area covered of PV panels)?
The calculations are confusing to me, it seems that I comply easily if I simply do not exclude the area covered by the pv panels*

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David Posada
Integrated Design & LEED Specialist
SERA Architects
LEEDuser Expert
1361 thumbs up

Wed, 07/10/2019 - 21:04

Usually we've subtracted the area of the PV panels and mechanical equipment from the total roof area to get a "net" roof area. Then the area of high SRI roof membrane that you have installed is calculated as a percentage of the net roof area. 

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