Archeological Glass
Blackfriary Glass: come from a Dominican Blackfriary located in Ireland
These stained-glass pieces are one of the more significant finds from the excavation of The Friary, which was founded in 1263. They are rare occurrence as Ireland has no surviving medieval glass still intact in windows. The cross-hatching pattern on the glass is indicative of the 13th century while the floral patterns are that of the 15th century.
Cleaning
Brushing off dirts and encrustions and cleaning glass by water. Brushing with industrial methylated spirits (IMS) to draw out any remaining water content. Removing lime plaster on the glass by 15T scalpel blade
Treatment Goal
The excavated glass were encrusted and broken. Thus, cleaning and consolidation were the main treatments to clean and stabilize the laminating glass
Consolidation
Consolidating glass by brushing with 10% Paraloid B72 in acetone around the unstable edges if any pieces needed.
Consolidating the broken glass by 40% Paraloid B72 in acetone