Análise do custo benefício da implantação do sistema construtivo de telhado verde em uma edificação no município de Barra do Garças - MT

Abstract

The reduction of green areas in cities caused by urban growth contributes to the process of environmental degradation. Therefore, it is necessary to search for sustainable alternatives for construction that will reduce the impacts caused on the environment. In this way, the green roof system appears as an alternative to minimize the effects of environmental degradation, such as heat islands. The objective of this work, through bibliographic review, is to define and present the advantages and disadvantages of extensive green roofs, to compare the performance regarding to the thermic comfort of traditional systems and extensive green roof systems and, finally, to perform a cost analysis comparison between green roof systems and a traditional system. The comparison of costs with the intention to verify the economic viability of the implantation of a green roof in the city of Barra do Garças, MT, was made through the composition of the cost estimation of the coverage of each system through the SINAPI table and data provided by specialized companies, using the same standard residence basis. It is concluded that the application of the green roof has an initial cost in the range of 32% bigger than a traditional system, but becomes viable in the city when it considers its long-term benefits, such as the energy savings generated and the increase in the life cycle of the coverage, in addition to all the environmental benefits generated.