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Patent glazing has an excellent record of public safety over many years. The following table can serve as a guide for selection of a suitable safety glass in any of our overhead patent glazing systems.

Glazing Height above floor level	Suitable Single Glazing Types	Suitable Double Glazing Types
0-5 Metres	Toughened, Laminated or Wired Glass	The lower pane should be Toughened or Laminated. If the lower pane is toughened glass then the upper pane should be Toughened. *
5- 13 Metres	Toughened glass not more than 6mm thick and 3m2 in area, Laminated or Wired Glass	The lower pane should be Toughened or Laminated. If the lower pane is toughened glass then the upper pane should be Toughened. *
Above 13 Metres	Laminated or Wired Glass	The lower pane should be Laminated. *

* It is possible to use wired glass as an inner pane in double glazed units. However this is not common practice due to a high risk of thermal breakages occuring with this composition. Please contact us for a more detailed explanation.

Note that toughened glass should not be used as single glazing or as a lower pane in double glazed units over swimming pools, where fragments of broken glass can enter the pool pumps and cause serious damage.


The Standard Patent Glazing Co. Ltd Flagship House, Forge Lane, Dewsbury, West Yorkshire, WF12 9EL sitemap		Tel 01924 461213 Fax 01924 458083 mail info@patent-glazing.com www.patent-glazing.com