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Introduction
‘Color and feeling’, ‘color and meaning’, these are concepts that have gone together since time immemorial. Artists and craftsmen have a special bond with color. After all, it is a means of expression that can have a real reinforcing effect. Especially linking color with light offers unlimited possibilities. Glaziers and glass painters have tried to master both these ‘instruments’ for centuries.“Color is a power which directly influences the soul”
- Wassili Kandinsky, Moskou 1866 – Neuilly-sur-Seine, 1944
“Color! What a deep and mysterious language, the language of dreams!”
- Paul Gauguin, Paris, 1848-Fatu-Hiva, 1903
The set of beautifully restored neo-Gothic windows in our collection are enough reason for us to let these works of art figure in a broader context.
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A bird’s eye view of the history of the European stained-glass window
Although the Romans already used translucent glass plates to cover wall openings, the stained-glass window reached its peak in Europe between 1150 and 1500. A period also known as the era of the cathedrals.At that time, stained-glass windows became more than just a way to let in the light, and to keep the space closed off. From now on, their functionality was also found in their didactic value. The biblical and saints’ stories that adorned the stained-glass windows became a kind of poor man’s bible. They brought, as it were, the knowledge of the holy scriptures in an understandable, pictorial way. At the same time, the colored light provided additional symbolism. The invading light was interpreted as a manifestation of God. It is also no coincidence that the main altar was bathed in light. It was the place where the most important sacrament was celebrated, that of the Eucharist. How were these magical colors obtained? Well, during the 12th and 13th centuries, metal oxides gave color to the glass. Copper, for example, produced different colors in the various stages of oxidation. The metal could color the glass light blue, green and even red. It should be noted that from the 13th century onwards, clear glass, which was cheaper and at the same time allowed more light into the buildings, was used more often. -
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A century later, in the years 1400 to 1500, glass painters frequently painted onto the glass with a ‘stain’ of silver chloride or sulfide. The painted piece of glass was heat-treated in a furnace. The heating process ensured that the silver ions migrated into the glass and became suspended within the glass network. The stain gave colors ranging from a pale yellow to a rather deep red. This new technique allowed glaziers to get more than one color on a single glass fragment. The shades produced by painting in silver chloride were well suited for depicting golden crowns, scepters and other gilded objects and ornaments. But the most important advantage of the technique was the fact that the glass painter could now make transitions from yellow tones to white without having to apply separations with lead strips! This also improved the legibility of the pictured scene.
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How Daniël Theys restored and revived Spectandum’s stained glass windows
The Belgian Glass restorer and glass blower, Daniël Theys (https://www.theys-miseur.com/danil-theys), made a career switch at a later age and has been active in the profession since 1987. He is an important player in the field of stained-glass window art in Belgium. Moreover, he is the only one in the country who still masters the technique of glass etching.
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"The stained glass company - Manchester"
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The restauration guidelines of the Agency for Monuments and Landscapes are not always the same as those of a restorer. For this reconstruction, Daniël primarily considered the purpose of the stained-glass windows. It had to be an aesthetic and salable set of stained-glass windows, so the choice of filling the gaps with neutral glass or epoxy was not really an option. Theys left well-executed previous restorations untouched. The windows may have been repaired three or four times in the past.
Another problem Daniel faced during the restoration was the fact that some small parts of the old grisaille had been eaten away by microorganisms. The defect – caused by moisture – can be seen from the discoloration of the grisaille. The black-brown color is turned red.
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The stained-glass windows of the 19th century are made of ‘in the mass-colored’ glass. This means that the colors were added to the liquid glass during its production process. This type of glass differs from glass colored with enamel paint, which became popular from the interwar period. The latter process involves applying enamel paint (this is a glass powder with a metal oxide to which a medium has been added) to the colorless glass. When firing the glass with the enamel paint, the powder fuses with the glass. The colors of email painted glass are less intense and less brilliant than those of ‘in the mass-colored glass’.For the restoration Theys only worked with mouth-blown glass, both with ‘in the mass-colored glass’ and with ‘verre plaqué’. This is blown glass composed of several layers of different shades. Over the years, Theys built up a large stock of old blown glass. Colored blown glass always has sliding shades. For example, a red piece of glass can have a color transition from bright red to light orange. These differences in shades are the result of the different thicknesses of the piece of glass. It allows the glazier to use a wide variety of shades.
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The windows were completely re-leaded by the restorer because there was virtually no ‘lead net’ preserved. In general, lead strips only have a limited lifespan because of oxidation processes. Daniël removed the old lead remnants and placed new lead profiles. Then he applied putty between the glass fragments and the lead strips to seal the lead. A window must be made watertight. The current condition of the windows is excellent.
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The glass stained windows today
The set of stained-glass windows we present today, originally consisted of windows of 5 to 6 m high. After all, they originally adorned a neo-gothic church. Since the original dimensions are not suitable for private buildings, it was decided to only restore the figurative representation.
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Based on the style of the stained-glass windows – most probably the late 19th century -, their religious iconography, and their original shape (pointed arch windows) and dimensions (5 to 6 cm high), we can assume that they were once displayed in a (neo-)gothic cult building. On the one hand, the stained-glass windows may have been removed after storm damage or other calamities, on the other they may have been taken away during a renovation or a demolition of a church. The Church of Our Lady in Laeken is the most famous church building in that municipality that could qualify. In the early 1920s, the central windows of the transept were badly damaged by a hurricane. Today, glass fragments of these windows (dating from 1893-1894) with the names of the sixteen missing saints and an arch infill of the western window are officially known.
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The window can be hung with a suspension eye. There is also the possibility to place the window in an upright position.Thanks to the craftsmanship of the Theys-Studio, we can once again enjoy the brilliance of color!
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