Historic Surfaces Consolidation - Multiple Treatments. Captured History of Changes and Advancement in the Field of Conservation via Microstructural Consolidation

摘要

This paper discusses the question of historic surfaces' microstructural consolidation with the benefit of hindsight, considering multiple treatments obtained within the long period of time. Numerous previous experiences have revealed and pointed out that the findings and outcomes considered as right and suitable in scientific literature as well as in conservation practice during the moment of the first surface intervention have been recognized to be, within long period of time, the main cause of new major damage. A case study - Duomo di Milano facade - has been analyzed with the indication of the stratigraphical changes of its surface aimed for forming a cause-effect relation of different applications, their replacements and effectiveness. A question of proper conservation methodology was raised concerning the meaning and preservation of each strata traced on the historic architectural surfaces.