Toughened Glass

toughened glass

Window or door glass which have the potential for human impact are legally required contain safety glass. Toughened Glass is one of the most common types of safety glass available.
Toughened glass, often known as tempered glass, is stronger and safer than conventional glass.
Tempering alters the qualities of the glass such that if it is broken, it crumbles into dull cubes, minimising harm.

Is Tempered & Toughened Glass the Same?

Toughened glass and tempered glass are basically the same thing and the terms are used interchangeably.

How is Toughened Glass Made?

Toughened glass glazing begins with a preparation stage that includes cutting the glass to the proper size and inspecting the glass for defects.
The glass is then subjected to a heat treatment in which it is heated to 600 degrees Celsius.


The heating technique is followed by “quenching,” which is a high-pressure cooling procedure that cools the glass in seconds.
The quenching process cools the glass’s outside surface faster than the core, leaving the centre in tension and the outer surface in compression, which is what gives tempered glass its strength.

Because of the increased endurance provided by differential heating, the glass can be stretched or dragged to a certain extent without shattering.


How to Identify Tempered or Toughened Glass

One effective method is to carefully examine the glass’s edges.
Because of the additional processing, tempered sheets have smooth and equal edges.
If the glass is not tempered, the edges feel abrasive to the touch.

Why is Toughened Glass Considered a Safety Glass?

Toughened glass fractures differently than regular glass, which is one of its key properties.
Unlike regular glass, which shatters into large uneven fragments, tempered glass shatters into little even pieces.
Tempered glass is commonly referred to as “safety glass” since it eliminates the threat of sharp edges and makes it a more safer option when it comes to breakage and accidents.

About the Author
David Chahine

David Chahine

David has over 5 years experience providing glass repair and replacement and is also the owner of Primal Glass Replacement