Why Do Oven Doors Shatter and How to Prevent It?

Ouadie Rhabbouron

Invisible imperfections can play a major role in unexpected breakage. The most commonly discussed flaw is a nickel sulfide inclusion. This tiny particle can become trapped inside the glass during manufacturing. While it may be microscopic, it can expand slowly over time, especially when exposed to repeated heat. During high temperature cycles such as the self cleaning mode, the stress placed on the glass increases. If an inclusion grows large enough, the glass may shatter without warning. Although this is rare, it is a known issue and one of the main reasons why some oven doors break spontaneously.

Daily habits can also affect the condition of the oven door. Something as simple as closing the door with too much force can weaken the structure. Placing heavy pans or leaning on the door while loading dishes can also increase stress on the glass. Cleaning methods matter as well. Abrasive pads, metal scrapers, or harsh tools can create micro scratches. While these marks may not be noticeable, they can compromise the surface and make breakage more likely over time.