Challenges and Potentials of Green Roof Retrofit: A Case Study

Abstract Green roofs are becoming common practice in building new public buildings and considered the for future since they address issue of energy environment simultaneously, providing social, environmental economic benefits. Despite these benefits, retrofitting an existing with a green roof is not widely practiced. Undergoing such project no small task it requires thorough investigation building's constraints, functional, material, technological to even begin considering design options. Therefore, this process specific, case-sensitive approach, especially aim improving building’s performance. This paper presents methodological approach proposals retrofit project, through case study Belgrade’s “City Housing” building. interesting research topic incorporates three distinct roofs, all different types, ways accessibility levels privacy, varying top-to-bottom from simple extensive semi-public semi/intensive garden ground-level park trees intensive vegetation. Also, provides socially significant services, frequently visited by general which potential introducing educational demonstration elements only functional ones. That way, can be showcase example, promoting greening as way their