Czynniki powodujące niszczenie fresków w średniowiecznym kościele na Malcie

• Authors: Taliana Carmen , Cassar JoAnn , Vella Alfred J. , Ventura Frank

Title variants

EN

Factors Causing the Deterioration of Frescoes in a Mediaeval Church in Malta

• Languages of publication: PL EN

Abstracts

EN

The fifteenth-century Church of the Annunciation at Hal Millieri hosts a series of frescoes which are unique to Malta. Concern for the conservation of these frescoes prompted a long-term study which included monitoring the internal microclimate of the church and a chemical and mineralogical analysis of samples taken from its fabric. Salts, mainly sodium chloride and nitrate, were found in the lower courses of the limestione walls. Erratic fluctuations in the relative humidity inside the church occasioned crystallisation of these soluble salts with damaging effects on the frescoe. Sealing off small windows in the little-used church caused the relative humidity to stabilize above 75%. This simple measure has eliminated the dissolution/crystallisation cycles and proved to be sufficient in resolving the problem of deterioration.

• Publisher: Narodowy Instytut Dziedzictwa
• Journal: Ochrona Zabytków
• Year: 1995
• Issue: 1
• Pages: 85-90

Dates

published

1995

Contributors

author

Taliana Carmen

author

Cassar JoAnn

author

Vella Alfred J.

author

Ventura Frank

References

• A. Lutreli (wyd.), Hal Millieri: a Maltese casale, its churches and paintings, Malta 1976, s. 143.
• A. Arnold, A. Kung, K. Zehnder, Deterioration and preservation of Carolingian and medieval mural paintings in the Munstair convent (Switzerland). Part 1: Decay mechanisms and preservation. Preprints of the Contributions to the IIC Bologna Congress, 1986: Case Studies in the Conservation of Stone and Wall Paintings, s. 190-194.
• A. Arnold, Nature and reactions o f saline minerals in walls. Preprints of the Contributions to the International Symposium, Bologna; The Conservation of Stone, II Part, A. Deterioration, s. 13-23.

Identifiers

ISSN

0029-8247