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Find out more about the Glass Design Toughening Advanced Process



Toughened or tempered glass is a type of safety glass that has been processed by controlled thermal treatment, to increase its strength compared with the normal glass. Toughened glass will usually shatter into small fragments instead of sharp shards when broken, making it less likely to cause severe injury.

On rare occasions toughened glass has broken in service. This can be caused by a variety of reasons including damage, impact or inclusions within the glass. One particular type of inclusion, nickel sulphide, is formed naturally within the glass making process but is of concern only in glass that is subsequently toughened. The inclusions are too small to be visually detected, but can cause spontaneous breakage. Heat Soaking allows the glass to cool much slower which reduces the risk of such breakages. Our Heat Soak ovens can accommodate glass up to 3000mm x 1800mm

Typically used for:

  • Glass doors
  • Shower doors
  • Glass shopfronts
  • Balustrades
  • Shelves and table tops

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