Dalle de verre
The technique was developed by Jean Gaudin in Paris in the 1930s. Slabs of coloured glass, 20 centimetres (7.9 in) to 30 centimetres (12 in) square or rectangular and typically up to 3 centimetres (1.2 in) thick, are shaped by breaking with a hammer or cutting with a saw. The edges of the resulting pieces may be chipped or faceted to increase the refraction and reflection effects.
The pieces are laid out to a design, similar to traditional stained-glass work. The pieces are laid on a bed of sand, bounded by a wooden casting frame. A matrix material, sand and cement or epoxy resin, is poured between the glass pieces and allowed to dry, typically requiring 24 hours to harden. The visible glass faces are then cleaned and the resulting solid panel can be relocated, embedded or hung as required.
The technique achieved prominence in the stained glass literature of the 1950s and 1960s.
Dalle de verre at Buckfast Abbey, Dom Charles Norris
Originally, concrete was used as a matrix, which means that older pieces will be structurally unsound and require renovation. Today, modern technology has created appropriate solutions: An epoxy resin was created with the same expansion rate as the glass. This resin is now used as a matrix instead of concrete. This has solved all structural issues.
Dalle de verre in the UKEdit
Dalle de verre was brought to the UK by Pierre Fourmaintraux who joined James Powell and Sons (later Whitefriars Glass Studio) in 1956 and trained Dom Charles Norris in the technique. Norris was a Benedictine monk of Buckfast Abbey who went on to become arguably the most prolific British proponent of dalle de verre. His work is incorporated in several Modernist listed Catholic churches.
- "La dalle de verre" (in French). Retrieved 25 April 2013.
- "Dalle de Verre Technique". Retrieved 25 April 2013.
- Bubnash, Lacey. "Dalle de Verre / Faceted Glass: New Approaches to a Modern Material" (PDF). Thesis Abstract. School of Architecture, Columbia University. Archived from the original (PDF) on 2014-05-10.
- "Key Resin, Sassafras Art". Retrieved 22 June 2020.