Explore the real cost of fixing a glass hob, from crack repairs to full replacements. Discover money-saving tips and what affects your bill in 2025.
Cracked Hob Repair: Quick Fixes and Pro Tips
Got a crack in your hob and the whole kitchen feels stuck? You’re not alone – cracked hobs happen more often than you think. The good news? Many cracks can be tackled at home, saving you time and money. This guide walks you through the most common reasons a hob cracks, what you can do yourself, and the signs that it’s time to bring in a specialist.
What Causes a Hob to Crack?
Heat stress is the biggest culprit. When a glass‑ceramic surface expands fast during heating and contracts quickly when you turn it off, tiny stress points can turn into visible cracks. Dropping a heavy pot, using the wrong cookware, or a sudden impact (like a pan sliding off a shelf) can also shatter the surface. Older hobs are more prone because the glass gets thinner over years of heating cycles. Finally, a faulty heating element that runs too hot or unevenly can create hot spots that weaken the glass.
Knowing the cause helps you prevent future damage. Always use flat‑bottomed pans, avoid sliding cookware across the surface, and let the hob cool down before cleaning. If you notice a small hairline crack, it’s usually a sign of thermal shock – the glass is reacting to rapid temperature changes.
DIY Fixes and When to Call the Experts
First, assess the crack. If it’s a tiny spider‑web line under a centimetre, you might be able to seal it yourself. Clean the area with a soft cloth and a mild glass cleaner – no abrasive pads. Once dry, apply a clear, heat‑resistant epoxy designed for glass‑ceramic surfaces. Follow the product’s instructions: usually you’ll spread a thin bead over the crack, smooth it with a spatula, and let it cure for 24 hours before using the hob again.
For larger cracks (over 2 cm) or cracks that run into the heating element, DIY isn’t safe. A compromised surface can shatter under normal use, sending shards onto the cooktop. In those cases, replace the entire hob glass. You can order a replacement from the manufacturer or a local supplier, but installation involves disconnecting power, removing the old glass, and fitting the new pane without damaging surrounding wiring. If you’re not comfortable with electrical work, call a qualified appliance repair technician.
When you decide to call a pro, be ready with this info: hob brand and model, the size of the crack, and any recent incidents (like a spill or impact). A professional will check the heating element, test for electrical faults, and ensure the new glass is fitted securely. Many services also offer a warranty on parts and labor, giving you peace of mind.
To keep your hob crack‑free, follow a few simple habits: always pre‑heat on low for the first few minutes, avoid slamming pots onto the surface, and never use metal scrubbers. Regularly inspect the glass for tiny chips – spotting them early can prevent a bigger break.
In short, a cracked hob doesn’t have to mean a full kitchen remodel. Small cracks can be sealed with the right epoxy, while bigger damage calls for a professional replacement. By understanding the cause and acting quickly, you’ll get your hob back in action without breaking the bank.