Análise do sistema de impermeabilização das áreas molhadas e molháveis de um edifício multifamiliar em Campo Mourão (PR)

Abstract

The frequent occurrence of moisture-related problems in buildings, such as water infiltration and structural damage, highlights the importance of the proper selection and execution of waterproofing systems in order to avoid high maintenance costs. This study addresses the analysis of the waterproofing system used in wet and damp areas of a multifamily residential building located in Campo Mourão, Paraná, Brazil, emphasizing its importance for building durability and the prevention of construction defects. The main objective was to evaluate the construction techniques adopted, the materials employed, and the compliance of the execution process with applicable technical standards. The methodology consisted of a practical case study based on project analysis, technical site visits, direct observation of construction stages, photographic records, and comparison with theoretical and regulatory references. The results showed that the adopted system, composed of polymer-modified mortar associated with polyester mesh reinforcement, is technically suitable for the intended conditions of use and demonstrates good execution practices. However, nonconformities were identified, particularly related to failures in critical interface areas and the limited waterproofing of damp areas, which may compromise the system's long-term performance. It is concluded that, although the system is efficient, its effectiveness depends directly on the quality of execution and control of construction stages. Therefore, compliance with technical standards is essential to ensure the performance, durability, and safety of buildings.