Faceted Glass (Dalle De Verre) Windows
de verre (French for "tiles of glass") also called faceted glass
windows, use one inch (2.5 cm) thick slabs of glass, cut into the desired
shapes then selectively faceted on the interior edges to enhance the refraction
of light. The design process for a dalle de verre window is similar to that of
a leaded glass window. However, the fabrication process is entirely different.
The cut and faceted pieces of glass are arranged on a casting table according
to the pattern design. Then an epoxy resin is poured between each piece to
create the structural matrix. Finally, the resin is covered with a layer of
colored granules. We strongly recommend the use of black or very dark colored
granules unless a very specific effect is desired. The black colored matrix
will result in a uniform presentation on the exterior of the building, much
like a solid sheet of glass. A light colored matrix seems to produce an
unsettling disorder that often conflicts with the architecture of the building.
While a protective covering is not required for faceted glass, many architects
specify a bronze or tinted sheet of exterior glazing to minimize the impact of
the faceted windows resin matrix on the design of their building. In
faceted glass windows, the negative space (the matrix) is even more notable
than in the design of a leaded glass window, and its impact on the finished
artwork is much more pronounced.
Care and Maintenance of Faceted Glass Windows
Properly formulated and fabricated faceted glass windows, made with an epoxy
matrix, should require no maintenance other than repairing loose glaziers putty
or construction sealant around the perimeter of the panels where they are set
into the frame.
However, older faceted glass windows fabricated with a portland cement matrix
may require extensive repairs and restoration over time. A professional stained
glass restoration company should be consulted for problems on this type of