General Information

  • ANNEALED GLASS

The stress created by the manufacturing process is removed during the annealing process. Annealed glass refers to the glass at the end of manufacturing ensuring high quality and easy cutting.

  • FLOAT GLASS

The foremost method of manufacturing normal glass is by the float method. Molten glass is poured onto molten tin, on which it floats. The glass cools to a sold as it passes over the tin and is lifted off the tin onto rollers.

  • COATED GLASS

Thin layers of material are applied “spluttered” to the surface of the glass to add properties to the glass including reduced light transmission, increased solar energy elimination, colour and aesthetic properties. Examples of coated glass include mirror, spectrally selective glass and the High and Medium reflective ranges.

  • INTERLAYER – LAMINATED SAFETY GLASS

The layer between two pieces of glass which is used to make laminated safety glass. The interlayer imparts additional properties to the glass including safety, security, solar control, light control, UV control, colour control and sound absorption.

  • DOUBLE GLAZED UNITS

Two or more pieces of glass separated by a spacer. The airspace between the glass is critical to the insulation value of the unit. The units are designed for thermal insulation, but have the welcome advantage of reduced noise transmission and lower total solar energy transmission.

  • LOW E

A coating added to the surface of a glass which increases the thermal insulation of the glass or Double Glazing Unit it is a part of.

  • WIND LOAD

The thickness of glass has to be specified by a professional team because it is determined by the framing system as well as the wind load that in turn is determined by the location and the terrain category. In the absence of a wind load please refer to glass thicknesses as per SANS 10400 PART N.

  • PERFORMANCE MEASURING STANDARDS

NFRC – National Federation Rating Council

IGDB – International Glass Data Base

SAGDB – South African Glass Data Base