As described in the LEED Reference Guide, a weighted average calculation may be performed for buildings with multiple roof surfaces to demonstrate that the total roof area has an average SRI greater or equal to a baseline theoretical roof with 75% at an SRI of 78 and 25% at an SRI of 30. Use this spreadsheet (with sample calculation) to determine if your roof complies—and if not, what adjustments need to be made.
Look to product cut sheets like these examples to find high SRI values, indicating roofing materials that comply with the credit requirements.
The project shown in this sample plan complies with the requirement to have greater than 75% of the roof area light-colored.
Check the SRI index of products specified to earn this credit. The pavers in these examples have varying SRI values, some of which would contribute to the credit, and some of which would not.
This site plan from a LEED project shows SSc7.1 compliance, with 50% of parking spaces located under cover.
A construction IAQ management plan like this sample is required for both options of this credit, along with IEQc3.1. This example details a plan meeting both flush-out and testing requirements, leaving it open which one will be used.
Take photos like these to document proper implementation of your ESC plan.