We produce antique window glass for various applications - architecture, old clocks, carriages etc. Glass sheets are avaible in every shape, dimension and thickness. We're manufacturing this type of glass for restoration architects and companies specializing in monuments conservation. It is used when the "old glass" appearance is needed. As the contemporary float glass perfection doesn't suit the historical buildings, there is a need of use "uneven" and slightly waved sheets of restoration glass.
Up to mid-twentieth century window glass was produced in Drawn Sheet technique - a "ribbon" shaped, long sheets were pulled up continuously, cooled and eventually cut into smaller parts. Small temperature changes during the hardening were causing some thickness variations and lines of slight distortions. Since 1950 window glass is produced by float glass process in which molten glass is spread along a tin bath. The finished product has perfectly smooth surface. Nowadays it's the most popular type of glass for architectural use. Due to its neatness and lucidity it fits the modern architecture.
However in monumental, historical buildings this neatness can be jarring. In restoration process it's important to keep the authentic look.
Imperfect but charming restoration glass will help maintain an unique atmosphere of the times and fulfill the conservation requirements.