Conservation of stained glass windows with protective glazing: Main results from the European VIDRIO research programme |
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| Authors: | Adriana Bernardi Francesca Becherini Marco Verità Patrick Ausset Maura Bellio Ulrike Brinkmann Helene Cachier Anne Chabas Felix Deutsch Marie-Pierre Etcheverry Franco Geotti Bianchini Ricardo HM Godoi Velichka Kontozova-Deutsch Roger Lefèvre Tiziana Lombardo Peter Mottner Chiara Nicola Isabelle Pallot-Frossard René Van Grieken |
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| Institution: | 1. National Research Council, Institute of Atmospheric Sciences and Climate, Corso Stati Uniti 4, 35127 Padova, Italy;2. Laboratorio di Analisi dei Materiali Antichi, IUAV University of Venice, S. Polo 2468, 30125 Venice, Italy;3. Laboratoire interuniversitaire des systèmes atmosphériques, Université Paris Est-Créteil, UMR CNRS 7586, 61, Avenue du Général-de-Gaulle, 94010 Créteil, France;4. Tecno Penta s.a.s, via G. Galilei 7a/2, 35037 Teolo, Padova, Italy;5. Dombauverwaltung der Hohen Domkirche Köln, Roncalliplatz 2, 50667 Köln, Germany;6. Laboratoire des sciences du climat et de l’environnement-CEA-Orme des Mérisiers, 91191 Gif-sur-Yvette cedex, France;7. VITO, Environmental Modelling Unit, Boeretang 200, 2400 Mol, Belgium;8. Laboratoire de recherche des monuments historiques, rue de Paris 29, 77420 Champs-sur-Marne, France;9. Stazione Sperimentale del Vetro, Via Briati 10, 30141 Murano-Venice, Italy;10. University of Antwerp, Department of Chemistry, Universiteitsplein 1, 2610 Wilrijk, Belgium;11. Fraunofer Institute for Silicate Research, Bronnbach Branch, 97877 Wertheim-Bronnbach, Germany;12. Genalysis GmbH, Im Biotechnologiepark TGZ II, 14943 Luckenwalde, Germany |
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| Abstract: | The methodology of protecting the European stained glass windows against environmental risk (e.g. meteorological factors, air pollution, microorganisms) by means of an external glazing is not new. In spite of many scientific studies carried out in the last 20 years, some questions were still up for discussion. The European VIDRIO (2002–2005) project gave an answer to these questions. The research carried out by the different project partners established a new multidisciplinary approach aimed at evaluating the efficiency of the protective glazing systems and their effects on stained glass windows conservation, and finally at assessing the most appropriate strategy to preserve stained glass windows. Scientific results showed that the so-called isothermal glazing (i.e. ventilation by the air coming from the inside of the building) protected efficiently the ancient stained glass window from environmental attack (i.e. rain, pollutants, condensation, thermal shocks) with very limited secondary effects. The scientific research highlighted that its efficiency was strongly related to the technical design of the protective system. In particular, the ventilation and the size of the interspace had to be carefully considered. The research developed within the VIDRIO project was turned into general recommendations to the owners and practitioners on the best practice for the stained glass windows future conservation. |
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