Concrete or quartz: which is safer?

Concrete is safer than quartz. It holds far less silica, so it's safer to make, to cut when it's fitted, and to repair or re-polish later. The question is in the news because of a bulletin HSE issued on 28 July 2026. It says HSE is making more than 1,000 visits to fabricators across Great Britain this year. Several businesses were told to stop work immediately after inspectors found dry cutting and weak dust control. Engineered stone is the family that includes quartz worktops.

Why does silica matter in a worktop?

Crystalline silica is a mineral. Cut it, grind it or sand it and it makes a fine dust that gets deep into the lungs. Over years that dust can cause silicosis, COPD and lung cancer. HSE says all three are preventable with the right controls, and that's exactly what its inspections are checking.

How much silica a material holds sets how much dust there is to control. According to the same HSE bulletin, engineered stone can contain as much as 90% crystalline silica. According to WorkSafe Victoria, concrete holds less than 30%. Same job with the saw, a lot less of the thing that does the harm.

Is concrete safer to make?

Yes, and it starts before anyone picks up a tool. A quartz slab is made first, then cut to your kitchen. A cast worktop is poured into a mould built to your size, so there's no slab to cut down. Most of what a fabricator does to a quartz slab, we do in the mould instead.

That's one reason we cast. Where we do grind, as we do to take a salt and pepper finish to 800 grit, the material underneath holds far less silica than engineered stone does.

Is concrete safer to fit?

A fitter will still have to adjust a top now and then. A wall that's out of square, a hob cut-out that moves, a plumber who needs a bigger hole for the tap. On concrete that adjustment makes a lot less silica dust than the same cut in engineered stone, so it's the safer material for the person holding the tool.

That's one more reason to get the size right before casting. The better a top fits when it arrives, the less anyone has to adjust it on site.

What about living with it?

Day to day, there's no difference worth worrying about. Once a worktop is made and fitted, both are inert, and a sealed concrete top sits in your kitchen the same way a quartz one does. The difference is on the way in and on the way out: making it, fitting it, and any repair or re-polish years on.

That last one is easy to forget. A chip, a scratch or a fresh polish means grinding at some point in the life of a worktop. On concrete, that grinding makes far less silica dust, and a worn patch of seal can simply be lightly sanded and recoated in place.

Does that make concrete the better worktop?

For the people making and fitting a worktop, concrete is the safer material, and that matters more than it used to. For you, there's the colour, the finish and the feel under your hand, and a screen can't show those. Our concrete worktops page has the finishes, the sizes and what each costs. Our post on concrete against quartz and sintered stone goes through how the three compare day to day.

Nothing beats holding a piece. Ask for free samples and put one on your own worktop for a week. They're cast and sealed the way a finished top is, so what you hold is what you'd get.