Sustainable architectural design of the Central Mediterranean

Abstract

The climate of the central Mediterranean archipelago of Malta is characterised by hot dry summers and cold humid winters. For centuries, the architecture of these geoheritage islands, erected in the local limestone, has addressed the physical characteristics arising from the topography. This industrial mineral, the source of dimension stones for the building construction industry since time immemorial, is being depleted at a rapid rate. The Islands have a significant stock of buildings which, due to growing public awareness, development planning policies and central government initiatives for heritage protection, are being restored, conserved and re-used. This paper explores contemporary sustainable residential architecture completed in recent years in existing urban contexts from environmental, technical and financial perspectives. Adopting a holistic approach to architectural design, bioclimatic and passive considerations would enhance the environmental quality of the existing built environment. Integrating them in the redevelopment through modifications and extensions to existing buildings in order to meet contemporary habitable standards rather than demolishing and developing new residential developments proved to be a viable option from all three perspectives. The resulting sustainable design solution optimizes on energy and land resources through minimising the impact/s on the natural environs which future generations will be enjoying. In addition to having healthier interiors, a prerequisite for the human wellbeing of users, such an approach is financially more remunerative. Based on case studies, this study concludes that energy site sensitive environmental design decisions integrated in existing residential properties is a secure socio-economic investment in the built heritage. The re-designed modifications and extensions are not only sustainable in terms of thermal and natural lighting but also in terms of building materials and construction techniques.