Life cycle assessment (LCA) of building refurbishment: A literature review

This review organises and summarises the recent contributions related to the environmental evaluation of building refurbishment and renovation using the lifecycle assessment (LCA) methodology. This paper classifies the recent contributions in this field and selects the primary methodology options. The review shows that most LCAs focus on energy refurbishment, comparing the environmental impacts before and after refurbishment. In contrast, almost none of the LCAs study the environmental impact of building system reparations, such as structure or finishing. The more frequently studied life cycle stages are those related to the manufacturing and use phases. Similarly, the most considered impact categories are the global warming potential and embodied energy. The main barriers found for disseminations are discussed: system boundaries interpretation of EN 15978, functional unit, LCI methods, operational stage and the end-of-life stage definition.