If your roof has multiple pitches and material types, you can use a “weighted- area SRI” value, using "Equation 1" as follows from the LEED Reference Guide. See the Roof Weighted Average Calculator in the Documentation Toolkit for more examples and to see if your roof complies.
Treat terraces and balconies as roof square footage if they protrude from the building and serve as a roof surface for conditioned spaces below. The top layer over conditioned space counts as a roof. For example, in some high-rise applications a rooftop pool deck will need to factor into equations. If an architectural covering or balcony does not have conditioned space below, it is counted as non-roof surface covering and is covered under SSc7.1: Heat Island Effect—Non-Roof.
The square footage of a pitched roof should be determined by calculating the surface area of the roofing material itself, not the area as seen from above.
This credit is fairly straightforward and simple to achieve by using light-colored roofing, a vegetated roof, or both, on a large area of the roof. (See the credit language for exact thresholds—which are higher for light-colored roofing than for vegetated roofs.)
If you use photovoltaic structures to shade hardscapes, they can count either toward shading hardscapes under Option 1, or shading parking spaces under Option 2—but not both. Decide which compliance path you want the PV to fall under.