Natural Stone Care & Sealing: The Practical Guide

Why natural stone deserves dedicated care

Natural stone is a living material. Every slab of marble, travertine, granite, onyx or limestone carries its own veining and reacts differently to water, acids and grease. Understanding your stone lets you maintain a flawless surface for decades with minimal effort. The most important distinction runs between calcareous and silicate stones.

Acid-sensitive stones: marble, travertine, onyx, limestone

Marble, travertine, onyx and limestone consist mainly of calcium carbonate. This gives them their warm, elegant character but also makes them acid-sensitive. Lemon juice, vinegar, wine, cola or acidic cleaners etch the surface and leave dull marks. These stones consistently call for pH-neutral care and a protective layer.

Robust granite

Granite is considerably harder, denser and largely acid-resistant. It copes better with everyday kitchen use and is less prone to scratches. Even so, it is not entirely maintenance-free: more absorbent varieties can take up oil and grease stains, which is why impregnation remains worthwhile here too.

Cleaning natural stone: the daily routine

The good news: cleaning your stone is simple once you follow a few ground rules.

• Use only pH-neutral cleaners or a dedicated natural-stone soap.
• Avoid acidic products (vinegar, lemon or limescale removers) and abrasive scouring agents.
• Wipe with a soft cloth or microfibre and lukewarm water.
• Dry the surface afterwards so the wash water leaves no streaks or limescale rings.
• Blot up spills immediately rather than rubbing them in.

Impregnating and sealing natural stone

Impregnating and sealing are often confused, yet they protect differently. An impregnation penetrates the stone, narrows the pores and lets the material breathe – it repels stains without changing the look. A sealant forms a film on the surface and offers stronger protection, but it can alter the level of sheen. For most natural-stone surfaces in living spaces, a breathable impregnation is the first choice.

Your step-by-step approach

• Clean: Thoroughly clean the surface and let it dry completely.
• Test: Try the product on an inconspicuous spot first.
• Apply: Spread the impregnation evenly with a brush or cloth.
• Let it work: Follow the manufacturer’s timing and wipe off any excess.
• Refresh: Renew the protection every one to three years depending on use.

A simple check: drop a little water onto the stone. If it beads up, the protection is intact. If it soaks in and darkens, it is time to impregnate again.

Caring for marble and preventing stains

When it comes to caring for marble, prevention is far easier than repair. Coasters under glasses, a cutting board instead of knife marks, and blotting up acids immediately reliably protect the surface. If you need to remove marble stains that are already there, a poultice of absorbent material and a mild cleaner left to act overnight often draws out greasy discolouration. Genuine acid etch marks can usually only be corrected by professional honing and polishing – all the more reason to avoid acidic products consistently.

Tips for bathroom and kitchen

In the bathroom

Here, limescale residue and standing water are the biggest challenges. Ventilate well, dry marble or travertine surfaces after showering, and reach only for acid-free, stone-safe products even against limescale. A reliable impregnation keeps moisture at bay.

In the kitchen

Granite is ideal for worktops because it tolerates heat and acids better. Onyx and marble look luxurious but belong on splashbacks or decorative areas rather than under the cutting board. As a precaution, always place hot pots on a trivet.

Looking for the right stone?

Whether warm travertine, classic marble, translucent onyx or robust granite – the range from Mercan Fliesen includes blocks, slabs and tiles in premium quality. Request a sample or contact us for personal advice. We will help you find the right natural stone and care for it perfectly from day one.