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Detachment techniques: stacco and strappo

  • Codice
  • IMC 205
  • Presentazione
  • The detachment of wall paintings from an original wall support is carried out only in exceptional cases today. However, from the early decades of the 20th century until the 1960’s, this technique was among the methods used to prevent further decay in, or even to avoid the complete loss of, wall paintings. For this reason, many conservator-restorers are now involved in the conservation or maintenance of paintings that are detached from their original support. To plan interventions is particularly complex, mostly due to the heterogeneity of the materials used (the original inorganic support and the paint layer, the new support and the glues that were applied in the detachment process). A detached wall painting loses many of its typical physical-chemical characteristics, such as the porosity of the mortar and a large part of the mineral component of the paint layer. In addition, the materials used in the lining can lose their elasticity over time. Understanding the materials and techniques used in the past in the detaching process, and performing the process on replicas will make participants more informed and prepared in planning interventions for the conservation and future appreciation of these works.
  • Obiettivi
  • In this course, participants will acquire theoretical knowledge and practical skills relating to the detachment techniques of stacco and strappo. Theoretical lessons will present the development of stacco and strappo techniques in Italy, defining the cultural context in which they have been applied, and their diffusion and use in Switzerland. Participants will also learn how to realise the stacco and strappo techniques, observing and discussing the typical technical problems that could arise during the procedures. Conservation issues present in detached works will be considered as well as the problems connected to their exhibition and long-term conservation.
  • Destinatari
  • The course is open to students and professionals in conservation-restoration, as well as art historians, architects, and officials in cultural heritage departments.
  • Requisiti
  • Practical and technical knowledge about the execution of wall paintings.
  • Certificato
  • Certificate of participation.
  • Crediti di studio
  • 0 ECTS
  • Programma
  • Lectures - Introduction to the history and practice of detachment techniques in Italy and Switzerland. - Methods and techniques of detachment. Anchoring and mounting the paintings in situ. - Conservation issues and exhibition of detached wall paintings. - Presentation of case studies. - Reasons and technical issues connected to the detachment of a wall painting from its original support. Practical activities - Preliminary interventions: pre-consolidation and preparation of the surface; use of glues and solubilisation parameters; application of the facing and lining. - Detachment: stacco a massello, stacco, strappo. - After detachment: treatment of the rear of the painting, application to the new support; lining; intervention layer; removing of the facing; transfer into a new mobile support.
  • Durata
  • 40 hours of lessons
  • Responsabile/i
  • Giacinta Jean giacinta.jean@supsi.ch
  • Relatore/i
  • Alberto Felici, lecturer-researcher SUPSI Conservator-restorer trained at the Opificio delle Pietre Dure of Florence with a masters degree in Art History. He has worked as an independent conservator-restorer, and he is now a professional and officer of the Italian Ministery of Culture working on the conservation of wall paintings and stucco decorations. Author of publications on historical artistic techniques and conservation restoration interventions, he has an established understanding and a deep interest for the issues connected with detached wall paintings.
  • Iscrizione ai corsi
  • Until 12 January 2020
  • Date
  • From 03 to 07 February 2020
  • Orari
  • 8:30-12:00 / 13:00-16:30
  • Luogo
  • SUPSI, Department for Environment Constructions and Design, Canobbio (TPL line 4, bus stop "Centro Studi") There is no parking available in the entire Campus area.
  • Costo
  • CHF 800.- SKR members will have a discount of 100.- CHF on the tuition fee (up to a max of 5 requests).
  • Osservazioni
  • The course can be held in Italian or English depending on the origin and the requests of the participants. The number of participants is limited to 15.
  • Informazioni di contatto
  • Administrative information SUPSI, Istituto materiali e costruzioni Campus Trevano, CH-6952 Canobbio T +41 (0)58 666 63 25 F +41 (0)58 666 63 59 imc.fc@supsi.ch Personal information Giacinta Jean giacinta.jean@supsi.ch
  • Informazioni
  • The course is promoted jointly by the degree program in Conservation-Restoration SUPSI - DACD.
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