Rehabilitation of renders of old buildings in Portugal: survey, supporting methodology proposal and case study

Purpose – The purpose of this paper is to present a proposal for a methodology to support the rehabilitation project of renders of old buildings. Design/methodology/approach – To achieve the objective it was considered essential to define the main types of participants and aspects to integrate the proposal. The research methodology consists in an inquiry presented to several professional participants in rehabilitation, a market study of materials and products available in Portugal, the design of a methodology proposal and its application to a case study. The inquiry sample totals 24 answers from the targeted professionals. A sequence of relevant supporting procedures consists in the proposal, which aims to provide a supporting methodology to decide and project in this context and also to be tested with its application to the building. This proposal was applied to an old building with load-bearing stone masonry walls and air-lime-based renders. Findings – It was concluded that the assessment of the buildin...