Glass Substract

Glass substrates are the individual plies of glass used to fabricate glass units and may also be referred to as float glass, raw glass or glass lites. Glass substrate options include clear, tinted and low iron.

  •  Clear is the most commonly specified glass substrate and has a slight green tint. In applications where designers wish to reduce the green tint, low iron glass is often specified in place of clear glass.
  •  Low iron is a type of float glass manufactured with less iron than standard clear glass. With this reduction in iron content, the green hue is reduced.
  •  Tinted glass is available in an assortment of colors and light transmission levels. In addition to providing a specific appearance, tinted glass has the added benefit of improving performance.


FSGLASSTM substrate offering includes clear glass, two low iron glass substrates and a variety of tinted glass options. Each substrate is available in a variety of thicknesses and can have reflective or Low-E coatings, as well as digital or silk-screen print, applied.


Tinted Glass Substrate

Glass Substrate Thickness
All glass substrates are available 5-25mm. For tinted substrates, specialty substrates the thickness are available 5-12mm.


One exception is laminated glass. Since there is no airspace to keep the heat absorbed by the tinted exterior ply from re-radiating into the building, the solar heat gain can be improved by moving the tinted ply to the inboard. This improvement happens when the clear coated outboard with high solar reflectance is placed in front of the tinted glass.

  • Acid Etched Glass – For a translucent appearance in an application where solar performance requirements are minimal, Viracon offers an acid etched glass substrate. This specialty substrate has a single acid etched surface which can be used for interior or exterior applications.