Sustentabilidade em edificações existentes: análise da catedral Nossa Senhora Aparecida (Cascavel-PR) perante certificações ambientais

Abstract

The growing urgency to adapt the vast existing building stock, in contrast to the literature's focus on new constructions, justifies this study, which aims to identify sustainable solutions for culturally significant buildings with a view to obtaining environmental certifications. The general objective is to conduct a technical and functional diagnosis of a case study, evaluating user perception and proposing alternatives in energy efficiency, water, and waste management. The methodology employed is a descriptive-exploratory case study of the Nossa Senhora Aparecida Cathedral in Cascavel-PR, using a mixed data collection approach that included on-site measurements, document analysis, and the application of questionnaires to the population and the case study's board members. Performance analysis was carried out by benchmarking against the Procel Edifica, LEED O+M, AQUA-HQE, and Zero Waste Seal certifications. The results demonstrate social support for the initiatives, led by the Pastoral da Ecologia Integral (Pastoral Care for Integral Ecology), and superior energy performance (Procel Level B and EUI 75.95% below the median) for a building constructed in 1976, showing potential for LEED O+M Silver Level (53 points), AQUA-HQE Basic Level, and the "Rumo ao Lixo Zero" (Towards Zero Waste) Seal. It is concluded that the main barriers to certification are not structural or high-cost, but operational, lying in the absence of a waste gravimetry routine, the lack of a critical monthly analysis of consumption, the non-existence of formal management policies, and inadequate infrastructure for reverse logistics.