Análise comparativa de desempenho térmico e patológico de um telhado de fibrocimento e telhado verde

Abstract

With unbridled urbanization, environmental impacts such as heat islands, decreased air and water quality, excessive consumption of natural resources, reduction of green areas and soil sealing were directly affected. In order to change this scenario, it was necessary to seek solutions with ecologically correct thinking, economically viable and environmentally sustainable. One of the solutions is the green roof, which can benefit the environment, contributing to the increase of green areas in cities, improving air quality, contributing to the management of rainwater, reducing high temperatures in the summer and maintaining the internal temperature in the winter. This work aims to evaluate the feasibility of implementing a green roof of the extensive type in the city of Dourados/MS, verifying, through the construction of two prototypes, the efficiency of the green roof compared to a roof with fiber cement tiles. For the analysis of the thermal performance, the monitoring of the external and internal temperatures of the two prototypes was carried out, in the period from March 10 to 30, at the times of 06:00, 09:00, 12:00, 15:00, 18:00 and 21:00. For the analysis of the pathologies, the physical changes in the prototype with green cover were observed. Thus, it is concluded that the green roof guarantees better thermal comfort, decreasing the temperature at peak times during the day and with the drop in the external temperature, it maintains its internal temperature. The pathologies detected were related to the emergence of weeds in the vegetation, there were no problems regarding soil infiltration and discharge.