Symptoms
- Visible crack line across the cooktop surface
- Chip or divot from a dropped pot or pan
- Crack seems to be spreading over time
- Discoloration or bubbling near the crack when heated
Likely causes
- CommonImpact damage from a dropped pot, pan, or heavy objectGlass cooktops are durable but can crack from a sharp impact, especially from cast iron cookware.
- CommonThermal shock from extreme temperature changesPlacing something very cold on a hot surface, or vice versa, can crack the glass.
- PossibleSugar or salt spills that etched and weakened the glass over timeCertain spills left to burn onto the surface can pit and weaken the glass, making it more prone to cracking.
- Less commonManufacturing defect in rare casesA crack appearing without any known impact may indicate a stress point from manufacturing.
What to do
- Stop using the cooktop immediately once you notice a crack, especially if it's actively spreading.
- Do not place any pots, pans, or heavy objects on the cracked area.
- Check whether the crack has caused any separation or exposed wiring underneath by looking closely, without touching, at the damaged area.
- Avoid using any burner near the crack, even if it isn't the specific damaged element.
- Photograph the damage for reference and any potential warranty or insurance claim.
- Contact an appliance technician or the manufacturer to assess whether the full glass top needs replacement.
- Do not attempt to repair a cracked glass cooktop yourself with sealants or adhesives, since this doesn't restore safety and can trap heat abnormally.
Tools and parts
Glass cooktop replacement panelSearch: “glass cooktop replacement for model”
When to call a pro
A cracked glass cooktop almost always needs professional replacement of the full glass panel rather than a DIY repair.
Safety
Use caution
Stop using a cracked glass cooktop immediately, especially near the damaged area, since it can expose wiring or worsen with heat.