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Toughened or sometimes known as tempered glass, is a type of safety glass with increased physical and thermal strength. When processed in our state-of-the-art toughening plant it can reach temperatures up to 680°C, depending on the thickness of the glass, this will create ‘balanced internal stresses’. This means that in the rare event of breakage, the glass will crumble into small pieces that are less likely to cause harm, as opposed to shattering into large dangerous shards. This makes toughened glass ideal for indoor and outdoor use in a wide range of applications, from table tops, shower doors, balustrades, Juliet balconies, shelves and much more!
Expert toughened glass suppliers in the UK
At the Express Toughening factory, we begin the process by placing a piece of float glass or annealed glass on a roller table. We apply the BSI Kite Mark stamp at this point, so you know that our glass is a high-quality product, responsibly sourced, in-line with British Safety Standards.
The rollers take the glass through the toughening furnace, which heats it up to above its annealing point. The glass then moves to the quench where it is rapidly cooled down. The difference in cooling rates between the outer layers and inner layers produces counter-acting stresses, creating higher resistance and improving the durability of the glass.
Once both processes are complete, the glass is toughened. However, it’s important to bear in mind that any cutting or drilling must happen prior to the toughening process, as cutting the toughened glass afterwards will only damage it.
Toughened glass is up to five times stronger than float glass of the same thickness, giving it much greater resistance against stresses such as thermal shock and forceful impacts. If the glass does shatter, it will break into hundreds of smaller pieces rather than uneven sharp shards, which greatly reduces the risk of injury.