Research studies carried out by EPA 2008 EPA 2008; Lawrence Berkeley National Laboratory and Oak Ridge Laboratory [8, 9, 10, and 11] have shown that the high initial solar reflectance of a roof can be degraded by deposition of soot, dust, and sun exposure. Therefore, the SRI is also susceptible to wear effects and it is crucial to evaluate the effects of aging over the reflective potential of the materials throughout the years