Concrete worktops are made from cement, sand, aggregate and water, then finished and sealed. They give a kitchen a solid, contemporary or industrial look that few other materials match. They also have real limits, so here is an honest guide to living with them in a UK home.
What concrete worktops are
Concrete is a mix of cement, aggregate and water that hardens over time. The Wikipedia entry on concrete explains how the cement reacts with water to set. Worktop makers use a finer mix than the concrete in a driveway, and they often add pigments and fibres. Most concrete worktops are either precast slabs made in a workshop, or in-situ pours made on site. Results vary between makers.
Looks and finishes
Concrete worktops suit grey, charcoal and warm stone tones. Many makers also offer colour through pigments. Each slab shows slight variation in tone, along with small pits or air holes. Many people value this character. Anyone wanting a uniform, glossy surface may be disappointed.
Finishes range from smooth and polished to more textured and matt. Smooth finishes show marks more readily. Textured finishes hide small blemishes but can hold dirt in the surface. Ask for full-size samples and view them under your own kitchen lights, because a small sample can look quite different in a room with north-facing windows.
Durability: heat, scratches, stains and water
Concrete is hard and copes with everyday knocks. It handles heat better than laminate or many resin-based surfaces. Even so, use a trivet for hot pans. Sudden temperature changes can crack the surface, and high heat can mark the sealer.
Scratches are less of a worry than with laminate, but edges can chip. Cutting directly on the surface dulls knives and can mark the finish, so always use a board.
Stains are the main concern. Unsealed concrete is porous, so wine, oil and coffee can soak in. A good sealer closes the surface and makes it far more stain-resistant. Acidic substances such as lemon juice, vinegar and some cleaning products can etch the sealer and the surface, leaving dull patches. Water is generally fine on a sealed worktop, but wipe up standing water near joins and the sink.
Hygiene and sealing
Sealing is the key to hygiene. A sealed concrete worktop is non-porous while the sealer stays intact, so liquids and bacteria have less to hold on to. The sealer wears over time, especially around the hob and sink. Many makers advise resealing at intervals, so follow the schedule your supplier gives and use the product they specify.
Daily care is simple. Wipe with warm water and a mild, pH-neutral cleaner, then dry. Avoid abrasive pads, bleach-based products and acidic cleaners. Keep the silicone sealant around the sink and hob in good condition, because water that gets under the edges can cause damage.
How concrete worktops are fitted
Fitting depends on the type. Precast slabs are cast in a workshop, cut to size and delivered to the kitchen. In-situ concrete is poured and levelled on site. This takes more skill and time. Either way, the fabricator should template the run once the base units are level and fixed.
Weight is the main practical issue. Concrete is dense, so a thick slab is heavy, much like stone. Base units must be strong, level and fully supported, and long runs or islands may need extra bracing. Ask your installer to confirm that the cabinets can take the load before the slabs arrive. Joins are normally visible, so plan them away from the hob and sink where possible.
Cutting concrete releases fine dust, which can contain crystalline silica, a lung hazard. Reputable fabricators use water and dust extraction. Do not cut or grind concrete yourself without proper protection, and ask any fabricator how they control dust before you book.
Likely cost
No single price applies to concrete worktops. Costs vary widely by maker, thickness, finish, edge detail, and the amount of cutting and sink work needed. Get written quotes from at least three fabricators. Each quote should show the material, templating, fitting, sink cut-outs, sealing and removal of the old worktop, so you compare like with like. For a wider view of budgets, see our guide to kitchen worktop costs in the UK.
Pros and cons
- Pro: a solid, distinctive look, with the option of a custom colour.
- Pro: hard-wearing, and it handles heat better than laminate.
- Con: porous unless sealed, and the sealer needs regular upkeep.
- Con: very heavy, so base units need careful checking.
- Con: hairline cracks and surface marks can appear over time. Some people see these as character, while others do not.
- Con: acidic substances can etch the finish, and repairs are rarely invisible.
Who concrete worktops suit
Concrete suits people who like a raw, solid look and accept some variation and wear as part of the character. It works well in open-plan kitchens with a contemporary or industrial style. It suits less well anyone wanting a flawless, low-maintenance surface, or a household that often leaves acidic spills standing. Compare it with granite, quartz and solid surface before you decide. If you are happy to reseal and wipe spills promptly, concrete can be a rewarding choice.