Invisible causes behind the shattered glass

Changing materials

Older ovens used borosilicate glass, which is highly resistant to thermal shocks.
Nowadays, manufacturers often use soda-lime glass — cheaper, but much more sensitive to sudden temperature changes.

Unpredictable internal defects

During manufacturing, microscopic inclusions, such as nickel sulfide, can remain trapped in the glass.
Over time and with repeated heating, these can expand and cause a sudden explosion.

Invisible yet critical damage

A tiny impact or even a fine scratch from a cleaning product can weaken the glass structure.
The door may explode… even weeks later.

5 Simple Steps to Prevent a Disaster

• Never use abrasive cleaning products
• Always close the oven door gently
• Don’t overuse the self-cleaning function
• Regularly inspect the glass for cracks or chips
• If you notice anything suspicious, call a professional

Even if your oven looks perfectly fine, these simple actions can help avoid serious incidents.
Sometimes, what seems harmless can become truly dangerous — even when the appliance is turned off.