Heritage building reuse in Egypt: Achieving a balance between energy efficiency and value preservation

Not enough attention is paid to implementing energy efficiency measures for reusing heritage buildings in Egypt. This is due to a lack of awareness regarding preservation regulations and values. While these buildings were not initially designed for their current function, balancing preserving their heritage values and enhancing energy efficiency when implementing reuse requirements is crucial. Without such considerations, the retrofitted heritage buildings risk losing their identity, thus undermining the fundamental goal of preserving these structures for their continued existence. This study employed an experimental methodology approach, utilizing various techniques methods such as the theoretical method in addition to the mathematical method for data collection, the Delphi method for determining the significance of heritage value, the Pearl Building Rating System (PBRS) as target identification for material selection, and a genetic algorithm for selecting the optimal solution. The experimental methodology was formulated by combining all previous methods. To ensure the sustainable reuse of heritage buildings and preserve their cultural significance for future generations, the research aims to investigate the possibility of retrofitting heritage buildings while conserving their value and maximize energy efficiency through material selection.