Gilding on wall paintings from a period

Abstract

The use of gildings on wall paintings enjoyed its largest development in Italy between the 13th and 14th centuries AD. This work covers a few important artefacts from the Lombard lake region, dating from a period between 1360 and 1520, and painted by the Seregnesi, Da Tradate and De Passeri studios. Its purpose is to understand the gilding techniques by means of scientific examinations (OM, SEM/EDS, FTIR), integrated with information from ancient treatises.Two main gilding techniques have been used in this context: the composite foil (tin and gold), and the single gold foil, in both cases fixed on the wall by a type of oil-based adhesive with the addition of inorganic pigments, mostly lead white and ochres, called missione. The scientific results are in agreement with the recipes contained in the ancient treatises, particularly in the Libro dell’Arte by Cennino Cennini.Extending the research to other case studies in Tessin and Italy, it is clear that the gilding technique was not influenced by the geographical and historical context, but by the final appearance required by the decoration on the wall surface. The use of tin in the composite foil permitted the gold foil to be burnished and engraved.