Coberturas verdes: a importância da estrutura e impermeabilização utilizadas

Abstract

The green roofs are used with advantages over conventional roofs in cold and temperate climates for several decades. Its use has gained more prominence in the last twenty years as an environmentally-friendly solution for roofing. Recently, it has aroused more interest in hot climate countries such as Brazil. These roofs are a very feasible option the tropics, such as cooling of temperatures, showing aspects of comfort and quality in the built environment. Analyzing case studies applied in the Southeast, checking the features and possibilities of application in our climate, from the point of view of thermal comfort, setting parameters and correlating them with the available literature, evaluating its cost-effectiveness and their behavior, we can see the efficiency of this technique in the tropics. After reviewing the literature as the principles of sustainability applied to the design guidelines and concepts, definitions and evolution of green roofs, the advantages and disadvantages of the system and its weaknesses are presented 4 case studies: Public School community in Babylon, Rio de Janeiro - RJ, residential building in Juiz de Fora - MG, a Laboratory in USP’Campus at São Carlos – SP and retrofit Ecohouse Urca in Rio de Janeiro – RJ with assessment of the main factors and target at critical points of structure and waterproofing that involved significantly in the success of such coverage. While there is growing interest and high demand, there are not many studies that will permit the implementation of green roofs on a large scale at tropical climates. The comparative analysis on the performance of green roofs have been tested in real contexts contributes to a better understanding of the topic and constructive assessment of the potential of this technique. Intends to collaborate in understanding and applying the guidelines elucidated by stimulating and facilitating the building will incorporate these requirements and are designed with these criteria, helping to spread the concepts in sustainable construction.