The main policies and measures promoted by the UNFCCC (1997) are addressed to improve the energy efficiency in relevant sectors of the national economy and research, promoting, and developing a larger use of new renewable energy forms. This proposal, to be investigated more in detail in future, responds to the criteria of non-invasiveness for preserving the cultural heritage identity, and simultaneously improving the energy and the structural response. In the paper some energy efficiency measures are considered, by examining also alternative interventions with respect to the classical ones, by applying innovative and sustainable materials, fashionable as well from a structural point of view. In particular, an energy audit protocol is studied and applied to a case study, consisting on an ancient masonry building located within the historical center of “ Sassi of Matera,” recognized as UNESCO site since 1993. This work mainly addresses to the application of non-invasive methods for energy retrofitting of historical buildings in Italy. In addition, commonly the adopted provisions do not belong to an integral design approach in which different aspects, such as architectonic, energetic, and structural should be together considered for obtaining a total building rehabilitation. Italian historical buildings do not respect often standard requirements established by National regulations, so that they need of an energy requalification. Dipartimento delle Culture Europee e del Mediterraneo, Università degli Studi della Basilicata, Matera, Italy.Elisabetta Negro *, Michele D'Amato and Nicola Cardinale
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