Análise comparativa de desempenho e custo de fachadas aderidas e ventiladas: estudo de caso em um edifício de alto padrão em Fortaleza-Ce

Abstract

The façade system has a direct influence on the overall performance of buildings, impacting thermal comfort, durability, the occurrence of pathological manifestations, and costs throughout the service life, especially in hot and humid regions such as Fortaleza, Ceará, Brazil. In this context, adhered façades stand out, as they are widely used in Brazil due to their constructive simplicity and lower initial cost, while ventilated façades present better thermal performance and greater durability, although they require higher initial investment. The main challenge associated with the choice between these systems lies in the integrated assessment of cost and performance, considering not only the implementation phase but also the technical and economic effects throughout the building life cycle. Thus, the present study aims to carry out a comparative analysis between adhered and ventilated façades regarding technical performance and global cost, applied to a high-standard residential building located in the Meireles district, Fortaleza–CE. The adopted methodology consists of a case study with approximately 5,800 m² of façade area, involving the survey and analysis of projects, quantification of construction systems, investigation of direct and indirect costs, as well as the evaluation of thermal and constructive performance based on technical standards and specialized literature. The comparison was conducted considering aspects such as cost, maintenance, durability, and thermal behavior of the systems. The results show that, although the ventilated façade presents a significantly higher initial cost compared to the adhered façade, its more efficient thermal performance, combined with greater durability and reduced maintenance requirements, provides technical and economic advantages in the long term.