Toughened Glass? Not So Tough
At Warrior Doors we have recently had a number of enquiries to fit Toughened Glass in our communal entrance doors.
By the name, it would be reasonable to assume that Toughened Glass is ‘secure’, however ‘toughened’ in this case doesn’t mean the product is necessarily able to withstand an attack.
Toughening is a thermal process that changes the surface of the glass – making it brittle and fragile.
Toughened Glass is prone to fail easily – and dramatically – from even a light impact under certain conditions e.g. from a sharp or metal object.
The main purpose of the toughening is to break the glass upon impact into granular chunks which is less likely to lead to injury. However, the fact that it easily breaks means it is not secure solution.
At Warrior Doors we fit only LPS 1270 and laminated anti-bandit glass to our products. The laminated glass that we fit has a layer of PVB (polyvinyl butyral), and in the LPS 1270 certified glass, as well as layers of PVB there are also layers of polycarbonate and lass has layers of glass.
On doors where less security is needed (such as some communal entrance doors) the minimum glass product we’d use is a 11.5mm anti-bandit glass.
This choice of glazing not only provides a higher level of security to Toughened Glass, but also provides the high impact resistance appropriate to a security door or screen.
Watch the video below to see how even a light tap from a tool shatters the Toughened Glass.