Why Oven Doors Shatter and How to Prevent It
Even a small flaw inside the glass can lead to a sudden fracture under normal cooking conditions. One common culprit is a tiny mineral inclusion called nickel sulfide. These inclusions can expand when heated, creating internal stress in the glass. Over time, repeated cycles of heating and cooling—especially during high-heat functions like self-cleaning—can trigger a sudden shattering event. This explains why some ovens seem to explode even when they appear to be functioning normally.
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