Abstract
Green roofs represent a well-consolidated solution for new or existing buildings to achieve considerable energy savings. Theoretical and experimental analyses have shown that in summer the interface temperature between green and structural roofs decreases considerably when compared with traditional roofing solutions, producing a limitation of the thermal energy entering the indoor environment. Experimental measurements carried out on a green roof in a Mediterranean location showed cooling peak powers noticeably reduced and cooling requirements 37.9% lower than for a bituminous black building roof. On a large scale, green roofs have been proven to help in the mitigation of urban heat islands (UHIs) thus contributing to improvement of livability in cities.
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