Salisbury Cathedral’s windows contain a fine collection of stained glass, the main body of which is 19th and 20th century but a considerable amount of Medieval glass remains, including seventeen patterns of grisaille glass, the most found in any European Ecclesiastical building. (Grisaille means decorated in one colour, usually grey).
The work being undertaken in the Cathedral’s own stained glass department at the moment is the conservation of two lancets of grisaille glass from the north choir aisle, most of which is originated in the Chapter House and dates from 1266. (Lancet windows are ones that are tall and narrow with a pointed arch at the top). This glass is currently being cleaned while being kept in its present lead matrix; when reinstated in spring 2014, it will be protected by isothermal glazing.
Placing the medieval glass of the Cathedral behind isothermal glazing is a continuing part of the Major Repair Programme, with only two of the windows that contain ancient glass left to complete before 2018. For further details of this process and for more on stained glass design, manufacture, repair and conservation please visit the Salisbury Cathedral Stained Glass website.