Credit 7.2- Heat Island: Roof
SS7.2 aims to reduce heat island while minimizing impact on microclimate and habitats. There are three different options you can fulfill in order to earn this credit. To meet Option 1, you must have 75% roof material with an SRI of 78 for a low-sloped roof and an SRI of 29 for a steep-sloped roof. Option 2 requires a green roof for at least 50% of the roof area. Option 3 combines both options and requires an installed high albedo and a vegetated roof.
Although adding green roofs can be costly, the implementation has synergies to an abundance of other credits. Vegetated roofs not only help reduce the heat island effect but can help increase open space, storm water management, improve natural habitat, and contribute to energy efficiency. Typically the contractor and AP work together to help achieve this credit.
(Source: -NC 2. 2 Reference Guide)