St Peter’s Collegiate Church, Wolverhampton - Chancel Windows
We were invited by Oliver Architecture to assess the condition of the windows at St Peter’s Collegiate Church, Wolverhampton, and following the submission of a successful tender, we embarked on our largest project to date. This eight-month programme took us into 2026 and included the conservation of windows containing medieval stained glass set into diamond quarry leaded lights, 19th-century stained glass by Michael O’Connor, and plain diamond quarry leaded lights.
In our studio, and with support from Rainbow Glass (East), we conserved five large three-light diamond quarry windows with introductions of medieval glass in panels, quatrefoils, diamonds and small scenes. We removed the medieval sections from their surrounding quarries and replaced them with clear glass with leadlines following the medieval designs. The medieval glass was cleaned, conserved, framed and reinstalled within a bespoke environmental protective glazing (EPG) system.
On site, we carried out a schedule of in situ cleaning, conservation and repairs to five nineteenth-century windows, conserving a sixth in the studio as it required flattening and more extensive repair. Prior to reinstalling the windows, we refurbished the exisiting bars, and fitted new gravel-filled lead cills to each of the lights to allow any moisture to run-off to the exterior of the building. We also completed an intensive mould cleaning regime to the remaining quarry windows.
We worked closely with Oliver Architecture on the project, and enjoyed hosting them in our studio to update them on our progress and research findings.
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