Diretrizes para diagnóstico e mapeamento da estanqueidade das fachadas das edificações para garantia da vida útil de projeto

Abstract

Studies about the occurrence of construction defects in residential buildings have increased in Brazil, especially after the implementation of the Brazilian performance standard ABNT NBR 15.575:2013. In this scenario, social housing, subject of this present paper, is present. This study aims to perform the process of diagnosis of construction defects related to the presence of moisture in rendering and plastering mortar facades in social housing by employing an alternative method of evaluation to those proposed by the performance standard, likely to be included to improve the standard methods. For its development, there is an experimental program, in which an investigation of the damages present in the facades of these buildings was carried out through thermography was made. Afterwards, a map of facade damage was developed, which allowed the measurement of these damages and consequently obtaining a damage factor of the study region. Guidelines were also proposed to help the diagnosis of the durability of these elements. It was concluded, through the adopted methodology, that thermography was presented as an effective, low-cost and easy method for the evaluation of the impermeability of vertical elements.