A plain diamond quarry vestry window before conservation. Two lancets in the vestry on the north side of the church are of a diamond quarry pattern, with green tinted cylinder glass and abraded border glass. The glazing was leaking badly due to subsidence in the vestry area of the building, causing movement within the north wall of the vestry. The movement had distorted the window openings causing the lead to separate from the glass, splitting the glass away from the lead-work with holes of up to 5mm in areas. The leading had failed with broken solder joints and cracking glass. Externally the windows were supported with wrought iron ferramenta, which was corroding and causing damage to the masonry jambs through rust-jacking. Each lancet measured approximately 400mm x 1070mm and was glazed with 10mm flat lead came. The glazing and ferramenta was removed for repair, the panels were dismantled, and the glass was cleaned. Badly broken glass was replaced with colour matched cylinder glass, and re-leaded in 10mm flat came. In this instance, the wrought iron ferramenta was replaced with a non-ferrous equivalent, in order to prevent further damage to the masonry.