CASE STUDY - Natural Stone Council

C A S E S T U DY: N a tu r a l S to n e S o l a r Ref l ecta n ce I n d ex a n d th e U r b a n H ea t I s l a n d E f f e p a r ed B y T h e U n iver s i ty o f Ten n es s ee C en ter f o r C l ea n Pr o d u ct U L 1 7 2 0 0 9 C O P Y R I G H T 2 0 0 8 N AT U R A L S T O N E C O U N C I LAn IntroductIon to HeAt IslAndsA significant impact of the built environment is the generation of a heat island, an area of increased ambient air temperature due to absorption and release of the sun s energy by buildings and other manmade structures. Heat islands are most common in urban areas where surfaces are comprised of synthetic materials. In particular, roofing and pavement absorb heat from the sun, especially when their capability to reflect solar radiation is poor. When the absorbed heat is returned to the air (through convection), the resultant raise in temperature can be quite burdensome on air quality, Natural resources, and ecosystems.

srI oF nAturAl stone Natural stone has the potential to be a cool roofing or paving material, an attribute with a number of marketable advantages.

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