In cool building strategies, what is the minimum Solar Reflective Index (SRI) required for roofing materials?

The minimum Solar Reflective Index (SRI) required for roofing materials in cool building strategies is set at 78. The SRI is an important measure that indicates how well a surface reflects solar radiation and releases heat. By achieving a higher SRI, roofing materials can significantly reduce heat absorption, which in turn minimizes the urban heat island effect, lowers the energy demands for cooling, and enhances indoor comfort.

A requirement of 78 for roofing materials ensures that they sufficiently reflect sunlight and help maintain cooler roof surface temperatures, especially in hot climates. This contributes to energy efficiency and aligns with sustainability goals under the Estidama Pearl Building Rating System, aimed at promoting environmentally responsive building practices.