Glass-top gas stove cracked: repair, replace the glass, or replace the stove?

The glass on a gas stove is toughened, but a heavy pan dropped on the corner or a cold splash on a hot surface will crack it. What happens next depends on where the crack is and what the stove is worth.

Stop using it first

A cracked toughened top can let go completely without warning, and it does so into small sharp pieces — over a lit burner. Switch off, let it cool, and do not cook on it until it is dealt with.

Can the glass be replaced?

Often, yes. Most mainstream brands supply the top as a spare, and fitting it means removing the burners, knobs and trim, swapping the panel and reassembling. It is a technician job because the gas valves sit underneath and get disturbed.

When replacement of the glass does not make sense

• The stove is old enough that the glass costs more than half of a new stove
• The brand no longer stocks the panel
• The crack came with heat damage to the burner bases or valves underneath
• The frame itself is bent — the new glass will crack the same way

Do not run the stove with tape over the crack or a plate covering it. The glass is structural; the burners are mounted to it.

The honest call

A technician will quote the glass and the fitting, and tell you what a comparable new stove costs. If the numbers are close, new is usually the better answer — you also get fresh valves and ignition. If the stove is recent and the glass is available, replacing the top is a sound repair.