Solar Reflectance Index (SRI)

SRI (Solar Reflectance Index) is a measure of the ability of a roofing material to reflect the sun’s heat and reduce the amount of heat absorbed by the building. It is a metric used to evaluate the energy efficiency of roofing materials and is intended to provide a way to compare the performance of different roofing products.

The SRI value is calculated using both the initial solar reflectance and the initial thermal emittance of the roofing material. It takes into account the way that a roofing material reflects and emits heat, and provides a single value that can be used to compare the performance of different roofing products.

Roofing materials with high SRI values are typically more energy-efficient and can help to reduce cooling costs. They are often used in warm climates to help improve building energy efficiency. SRI values can be used by building professionals, building owners, and policymakers to make informed decisions about roofing materials and to help promote the use of energy-efficient roofing products.