Spandrel Glass

Spandrel glass is used to prevent materials or construction elements from being viewed from the exterior of a building. The primary function of spandrel glass is to cover non-visible areas - including the areas between floors, hung ceiling areas, knee-wall areas below vision lights, and sometimes even columns or partitions. It conceals areas from direct viewing, like between the floors of a high-rise building, in order to mask wires, piping, insulation, etc.
Spandrel glass is designed to mask vision through the structural areas of a building such as between floors and columns. It is widely used in curtain wall projects, where it provides non-transparence with high safety and resistance to corrosion.
Spandrel glass must be heat treated to avoid thermal stress breakage.
Spandrel Glass with Ceramic Frit
Spandrel glass can also be ceramic frit, then tempered to fuse the frit with the glass; the result is a non-vision glass panel. As this glass is heat-treated during the glass processing, it supplies adequate resistance to thermal stress. Spandrel glass can also be insulated to increase its thermal performance.
Aesthetic Purpose
The main aesthetic purpose of spandrel glass is to create an overall uniform appearance. By using glass panels, spandrel glass can match most other types of glass used in the vision panel of buildings.
Aesthetically, it can be applied in two ways. One is to contrast the appearance of the vision panels and spandrel panels.
When trying to create an exterior uniform appearance, colors and the optical properties of spandrel glass should be a close match of vision glass. If spandrel glass is monolithic and vision glass is either monolithic or IGU, the spandrel glass has to match the optical properties. As far as the different lighting conditions behind the spandrel and other factors is concerned, it is practically impossible to obtain a perfect match; however paying attention to detail can result in greater uniformity.
Spandrel glass is available in numerous shades of white, grey, black as well as in metal-flecked variants. The color of spandrel that is chosen is particularly important, since the color will affect the overall appearance of the building that it is applied to. When carefully matched with similar colours, spandrel can be the ideal choice for all types of buildings.