What is Tempered Glass?

Tempered Glass is hardened glass. 

Glass is cut to the required size and then submitted to a heating process.  After the process is complete the glass becomes approximately four times harder than regular glass.

When the glass is tempered it is consider safety glass. If tempered glass should happen to break, it shatters into small pebble sized pieces so as to avoid any serious injury.

An example of shattered tempered glass

shattered tempered glass

Tempered Glass is required in doors and certain windows according to building code.  An example of a window would be over a tub, within 18″ of the floor and more. Having one pane tempered out of two is required Fire Code in certain areas.  

You cannot tell the difference between tempered and annealed glass by appearance alone. Both can be fashioned into all shapes and sizes. To verify the difference, look for a seal or stamp in the corner of tempered glass.

Tempered Glass is for your safety in case that pane of glass breaks.