Mapping defect sensitivity in external mortar renders

This paper presents and discusses a probabilistic approach to the definition of different levels of defect sensitivity in cementitious mortar renders, applied in façades. The proposed methodology is based on fieldwork carried out in the South of Portugal, in which a visual assessment of 150 façades was made. In this work, the degradation level of six independent parts of the façade is registered as well as the most probable causes of defects. The aim is to produce risk charts mapping degradation patterns that can be used as a tool to enhance the durability of mortar rendered façades.