How to care for a natural stone worktop: sealing, what to avoid and what products to use

A natural stone worktop lasts for decades if you follow three simple rules: seal it periodically, avoid acidic and abrasive products and clean it daily with pH-neutral solutions. The rest are details. Granite is more forgiving, marble more sensitive to acids, but the principle is the same for both. Below we explain exactly what to do and, more importantly, what not to do, so you do not end up dulling the shine or leaving stains on an expensive stone.

Why does sealing (waterproofing) matter?

Natural stone, however compact, has pores. Sealing applies an invisible layer that fills the pores and prevents liquids — oil, wine, coffee, water — from penetrating. Without it, an oil stain can seep into the stone and stay there.

• At installation, the worktop is always sealed. It is the basis of protection.
• Renewal is done periodically. For marble, more often — usually every 6–12 months. For granite, at longer intervals, depending on how intensively it is used.

A simple test: put a few drops of water on the worktop. If the water beads and stays on the surface, the sealing is good. If the stone darkens where you put the water (absorbs it), it is a sign it needs re-sealing.

How is the sealer applied?

The surface must be clean and completely dry, with no detergent residue. The specialised product is applied evenly, left to penetrate and the excess wiped off according to the manufacturer's instructions. It is not a complicated operation, but it must be done on a clean stone, otherwise you "seal" the dirt under the layer.

Which products should be avoided?

This is where most mistakes are made, and some leave permanent marks:

• Acidic solutions — anything containing vinegar, lemon, acid or bleach (chlorine). Even diluted, they attack the surface and, in the case of marble, leave matt marks where the shine is "burnt". Many universal bathroom and kitchen solutions are acidic, so read the label.
• Abrasive powders and steel wool — they scratch the shine, especially on polished surfaces. Fine scratches accumulate and the stone looks matt.
• Aggressive washing-up liquids in large amounts — used often and in excess, they can degrade the protective layer over time.

In short: if a product does not clearly say it is suitable for natural stone, do not use it on the worktop.

Which products are suitable?

• pH-neutral solutions, designed for natural stone, or water with a very mild detergent.
• Soft microfibre cloths or a soft sponge. For more stubborn dirt, work at it with the soft sponge, not with something abrasive.
• Fluorine-based maintenance products for granite — they help repel grease and liquid stains.

The daily routine, in three steps

• Wipe after each use. A damp cloth with mild detergent, then wipe dry. Do not let coloured liquids (wine, coffee, beetroot) sit on the worktop.
• Do not flood the stone. Especially with marble, avoid washing with plenty of water. A daily wipe with a well-wrung cloth is better than a bucket of water.
• Clean spills on the spot. Oil, citrus juice or wine are wiped up immediately, not "later". A quick reaction prevents most stains.

Small habits that extend the life of the worktop

Use a chopping board when you cut — not directly on the stone (you protect both the knife and the shine). Put a trivet under very hot pots: granite withstands heat well, but repeated thermal shocks do no material any good. And with composite stone (quartz), a trivet is mandatory, because the resins in the composition do not tolerate direct heat.

How do you remove a stain that has already entered the stone?

If oil or coffee stained the stone before sealing, do not scrub aggressively — you risk spreading the stain and dulling the shine. For grease stains that have penetrated, there are special absorbent pastes (poultices) for natural stone, which "draw" the stain out of the pores overnight. They are applied, covered, left to act and then removed. It is a repair operation, not daily cleaning, and in difficult cases it is safer to ask a specialist for advice than to experiment with household solutions that can make things worse.

Conclusion

Maintaining natural stone is not hard, it is just a matter of habit: periodic sealing, mild pH-neutral products, no acids or abrasives, plus a quick reaction to spills. With these rules, a granite or marble worktop looks good even ten years on.

At the Depozitul de Marmură we recommend both the right stone and the correct maintenance for each sort. See our range of granite worktops and marble worktops, brought from direct import.

Already have a worktop and do not know how to look after it, or want a new one? Write to us and we will tell you exactly which products to use. Request a free quote or recommendation.