World Class Machinery

Grandmark Glass is made using state of the art technology:



How Tempered Glass is Made

Tempered glass is manufactured by applying extreme heat to a piece of glass, causing it to reach its softening point. In turn, it is then cooled to produce the desirable level of surface compression. Tensile stress is also applied within the glass substrate to enhance its physical strength, resulting in a product that is typically four to six times stronger than regular glass.

Unlike laminated windscreens, tempered glass is intended to break up into tiny, granular chunks when impacted. This inherent safety feature helps to avoid injuries to the occupants of a vehicle in the event of an accident, as the resulting fragmentation is free of sharp, jagged edges.



How Windscreens are Made

To manufacture a high quality windscreen such as Grandmark Glass, two sheets of float glass are heated and bonded with a PVB vinyl interlayer.

This process ensures that a windscreen will not break up into dangerous shards upon impact, and it’s because of this that laminated glass is often referred to as ‘shatter proof’ glass. When struck, the product is designed to hold together and produce a characteristic ‘spider web’ cracking pattern. Laminated glass also reduces the transmission of high frequency sound and blocks 97% of ultraviolet radiation.