At its simplest, toughened safety glass is regular glass which has undergone a method of heat treatment referred to as thermal tempering. Passing through a furnace heated to 650°C or thereabouts, the glass it taken way its normal transition temperature and starts to soften. At this point, the surface of the glass is cooled rapidly. Speed is of the essence as it is essential that the interior of the glass remains hot throughout the process. It is this tempering that create centre tension in the newly-toughened pane, altering its physical properties and resulting in glass that is capable of withstanding pressures far higher than normal glass can manage.
As you’d expect, it’s tough… really tough. Indeed, it is up to five times stronger than normal glass. Correctly tempered, it can easily take a blow of 10,000 psi (pounds per square inch) without breaking. It is also considerably more resistant to thermal breakage – that is, it will not crack in the heat. An interesting property of toughened glass is that if it should break, rather than shattering into dangerous shards of glass, it crumbles into small fragments or pebbles, which makes it far safer that its regular counterpart. Equally, it is easier to clean up in the even of a break, as you can simply sweep it up and deposit it in a regular refuse bag.
Only one – when a pane of toughened glass shatters, it shatters entirely. The entire pane will crumble into piece once part of it is breached. That said, the benefits of toughened glass far outweigh the negatives, and this side-effect can be somewhat rectified by choosing laminated toughened glass, which coats the pane in a plastic veneer that keeps the pieces together in the event of a break.
With over fifty years of experience with toughened glass, we are able to provide you with the best advice, materials, and service in the Dorset area. Hundreds of satisfied customers across the county can attest to our workmanship, and regularly do, recommending us to friends and family alike.
Whether you need toughened safety glass for safety, security, or a little bit of both, call our Wimborne office today on 01202 848 868, and have one of our technicians pay a visit to assess your requirements in person.
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