People ask this before ordering because a hob is not a forgiving spot on the wall to get wrong. A glass splashback behind a hob is one of the few wall coverings actually built for that position, provided the glass is toughened and fitted with the correct clearance. The more useful question is what makes that true, because “heat resistant” gets printed on a lot of kitchen products that have never been anywhere near a naked flame.
What Actually Makes a Glass Splashback Heat Resistant
Heat resistance comes from how the glass is made, not a coating applied afterwards. Our heat resistant glass splashback range starts as standard glass heated past 600°C, then hit with high pressure air to cool it fast. That rapid cooling is the whole trick. It leaves the outer surface locked in compression while the core sits in tension, and that push and pull between the two is what gives toughened glass four to five times the strength of the glass it started as.
Untreated glass has none of that built in tension. Push the same heat at it and it has nothing to counteract the expansion, so it cracks in exactly the conditions toughened glass shrugs off.
Can a glass splashback crack from heat?
Not from normal hob use, if it is properly toughened. The real vulnerability is thermal shock, a sudden jump between two extreme temperatures rather than sustained heat over time. Fit the glass correctly behind a hob and clean it as normal, and that kind of shock never happens. Pour boiling water straight onto a cold panel and it might. Those are two different failure modes. Confusing “the hob made it too hot” with “the temperature changed too fast” is where a lot of the anxiety around this comes from, and they are not the same risk at all.
Glass Splashback Behind a Hob, Gas Specifically
Gas is the hob type people ask about most, because it puts a naked flame closer to the wall than any other cooking method. Toughened glass copes with this well. It is designed to cope with high temperatures and normal cooking conditions once installed correctly and with the proper clearance, and that clearance is the part that actually matters more than the glass thickness.
How far should a glass splashback be from a gas hob?
There is no single figure printed in UK building regulations that applies to every kitchen, and any source that gives you one exact number for every hob is oversimplifying it. The distance that matters is the one set by your hob manufacturer, because burner output varies between models and that is the guidance that actually gets followed on site. Our team can advise on clearance for your specific setup, and getting this right at the planning stage is a five minute conversation rather than a problem to fix after the glass is already up.
What does not vary is the material requirement. A gas burner running at medium heat generates surface temperatures on the wall behind it that regularly exceed what plastic sheeting can survive without warping. Glass does not carry that limitation.
Electric and Induction Hobs Are a Different Case
Electric ceramic hobs sit somewhere between gas and induction in terms of what the splashback behind them actually experiences. Induction hobs generate heat directly in the pan rather than radiating it outward from an element or a flame, so the wall behind an induction hob sees noticeably less thermal load than the wall behind a gas burner. Toughened glass handles both without issue, but induction is the lower risk application of the two if you are weighing up how cautious to be with clearance.
None of this changes the cleaning or durability argument either way. A splashback behind an induction hob still needs to survive daily grease, splashes, and cleaning, and glass does that regardless of which heat source it is sitting next to.
Does Glass Need to Be Thicker Behind a Hob
No, and this catches people out because it seems like it should be true. Our guide on how thick a glass splashback needs to be covers this in full, but the short version is that 6mm toughened glass is the standard for the vast majority of kitchens, hob included. Safety and heat resistance come from the toughening process, not from adding millimetres. An 8mm panel is not meaningfully safer behind a hob than a 6mm one. People choose 8mm for the look and the extra depth it gives a printed or coloured design, not because 6mm falls short where heat is concerned.
Does a glass splashback need to be thicker behind a hob?
No. Thickness affects how the glass looks and how it is fixed, not how well it resists heat. A 6mm toughened panel and an 8mm toughened panel handle the same hob the same way, provided both are correctly toughened and installed with the right clearance.
Why This Is Where Acrylic Falls Down
We cover the full comparison in glass splashbacks vs acrylic splashbacks, but the hob position specifically is the clearest example of why the two materials are not interchangeable. Acrylic is a plastic, and it begins to distort at around 80 to 100°C. A gas burner running at medium heat regularly pushes the wall surface behind it past that point. The result is not usually dramatic. It is a slight warp near the burner, a yellowing at the edge closest to the heat, a bubble that appears one month and never goes away.
Can you put an acrylic splashback behind a gas hob?
Not directly behind one, no. A freestanding cooker or gas hob puts sustained heat onto that wall throughout every cooking session, and acrylic is not manufactured to handle that kind of exposure. This is why our cooker splashbacks are made from toughened glass specifically. The position has a defined material requirement, and plastic sheeting does not meet it regardless of price.
Are Glass Splashbacks Safe?
Toughened safety glass is manufactured to BS EN 12150, the British Standard covering thermally toughened soda lime silicate safety glass, and that certification exists precisely because of applications like this one. If toughened glass does break under extreme force, it fractures into small blunt fragments rather than sharp shards, which is the same property that makes toughened glass the standard choice for glass balustrades and shower screens.
The one thing worth asking any supplier is whether the toughened glass has been heat soak tested. Toughened glass can occasionally contain microscopic nickel sulfide inclusions left over from manufacturing, invisible to the eye, that can in rare cases cause a panel to fail spontaneously years after installation with no impact or heat trigger involved. Heat soak testing catches the vast majority of at risk panels before they leave the factory by deliberately forcing that failure under controlled conditions rather than leaving it to chance in someone's kitchen. It is a fair question to ask, and a supplier who can answer it properly is one worth trusting with a hob-adjacent installation.
Choosing the Right Glass Splashback for Your Hob
For most kitchens, the decision is straightforward. Toughened glass from our heat resistant glass splashback collection handles gas, electric, and induction hobs without issue, at the standard 6mm thickness, provided it is fitted with the clearance your hob manufacturer specifies. If you want to see the full range of colours, finishes, and sizes beyond the heat resistant collection, our full glass splashback range covers everything from plain toughened panels to printed designs, all made from the same toughened safety glass regardless of which one you pick.
Get in touch if you want advice on clearance for your specific hob before you order. It is a quick conversation, and it is the part of the installation that actually determines how the glass performs once it is on the wall.
