Fig 5b Detail of structural damage and past restoration to a tin-glazed earthenware tile. The break across the centre, restored in the past

Individual tiles had vulnerable areas of damage that required students to make further considered judgements. Some areas of the glaze have flaked off the surface exposing the ceramic body, leaving the glaze edges vulnerable to further damage - often requiring cleaning to be delayed until consolidation had taken place, to prevent further lifting of the glaze.