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Author(s): Eva Barreira
Vasco Peixoto de Freitas
Title: Defacement of ETICS cladding due to hygrothermal behaviour
Issue Date: 2008
Abstract: External thermal insulation systems for walls (expanded polystyrene insulation faced with a thinrendering) ETICS have been used in Portugal since the nineties. Despite the thermal advantages,Portuguese buildings covered with ETICS are faced with a huge and yet unsolved problem: thesystems defacement caused by microbiological growth.In recent years, although several studies have been carried out to solve this problem, the practicalconclusions are not very satisfactory: so far the only feasible solution is to use biocides. Thesechemical products are not environmentally friendly and are considerably expensive because of theirshort-term effectiveness.To obtain a less expensive solution to this problem, it is essential to first understand the hygrothermalbehaviour of façades covered with ETICS, namely, the dynamic heat exchange between the ETICSexterior layer and the atmosphere. It is also very important to study the influence of the surfacesorientation and the local climate.This paper presents the results of an experimental characterization of ETICS hygrothermal behaviourperformed by the Building Physics Laboratory (LFC) of the Faculty of Engineering of PortoUniversity (FEUP). In-situ tests are being carried out on a building covered with ETICS located inPortugals northwest region.
Source: 11DBMC International Conference On Durability of Building Materials and Components
Document Type: Artigo em Livro de Atas de Conferência Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Livro de Atas de Conferência Internacional

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