Natural stone tile care: the complete sealing and cleaning guide
May 2026
Natural stone — travertine, marble, limestone, sandstone — is porous. Porcelain is not. This single difference is the reason most generic tile-care advice is wrong, and the reason so many beautiful stone floors get destroyed by their owners within the first year.
This guide covers sealing, cleaning and stain removal for real natural stone only. If your tiles are porcelain, ceramic or any vitrified man-made material, you don't need to seal them. This guide isn't for you.
Why stone needs sealing
Natural stone is formed from compressed minerals that retain a porous internal structure — microscopic channels and voids running through the body of the tile. Liquids find these channels by capillary action and wick into the stone, where they sit and stain.
A penetrating sealer fills those channels with a water-repellent compound, creating an invisible barrier that stops liquid absorption at the surface. The stone still looks like stone — the sealer doesn't add gloss or change the colour — but spilled water now beads up rather than soaking in.
Without a sealer, the first glass of red wine, the first dropped olive oil, the first acidic cleaning product wicks into the stone and leaves a permanent mark. It cannot be cleaned out. It can only be honed out professionally, by removing the top millimetre of stone — expensive, slow, and only possible once or twice in a tile's life.
Sealing schedule by stone type
Travertine. Seal before grouting and again immediately after grouting. Reapply annually in high-traffic areas like kitchens and entryways. Every two years in lighter-use rooms.
Marble. Seal every 6–12 months depending on use. Marble is soft and reacts to acid — a sealer will not prevent etching, which is a chemical surface reaction, but it will prevent staining, which is liquid absorption. The two are different problems with different solutions.
Limestone. Seal every 6–12 months. Limestone is highly porous and particularly vulnerable to staining from oil, wine and coffee. It rewards a careful sealing schedule more than any other common stone.
Sandstone. Seal every 12 months. Sand-based stones are porous but less chemically reactive than marble or limestone, so the consequences of a missed sealing are less severe — but the stone still stains.
For all stone types, test the seal annually with the water-droplet test: drop a small amount of water on the surface. If it beads up, the seal is intact. If it darkens the stone within 30 seconds, it's time to reseal.
Daily cleaning DOs and DON'Ts
DO: Use a pH-neutral stone cleaner, warm water, a soft microfibre mop or cloth, and immediately blot any spill — within seconds, not minutes.
DON'T: Use vinegar (etches marble and limestone permanently). Lemon juice (same — any acidic citrus is a stone-killer). Bleach (discolours stone over time and breaks down sealers). Ammonia-based products including most window cleaners (strips the sealer in one application). Steam mops (forces water and steam into the pores, defeating the sealer's purpose). Generic supermarket floor cleaners (almost all are too acidic or too alkaline for stone).
If you remember nothing else: never put vinegar near a marble or limestone surface. The damage is immediate and permanent.
Stain removal by type
Oil-based stains (cooking oil, grease, lipstick): Make a poultice from chalk powder or talcum powder mixed with hydrogen peroxide to a paste. Apply over the stain, cover with cling film, and leave for 24 hours. The poultice draws the oil out as it dries. Wipe away and rinse with neutral cleaner.
Organic stains (coffee, tea, wine, fruit juice): Apply diluted hydrogen peroxide (12% solution) with a clean cloth, leave for 15 minutes, rinse with water. Don't scrub — let the chemistry do the work.
Rust stains: Use a commercial rust remover specifically designed for natural stone. Standard rust removers are acid-based and will etch marble and limestone permanently while removing the rust.
Etching (dull, lighter spots on marble or limestone, usually from acid contact): Cannot be removed with cleaning. Etching is a chemical reaction that has dissolved the surface of the stone. The only fix is professional honing or polishing, which removes the top layer of stone. Prevention is the only real solution.
Ink: Apply rubbing alcohol with a cotton bud, carefully, to the stain only. Do not flood the area.
Frequently asked questions
How often should I seal travertine tiles?
Annually in high-traffic areas, every two years in lighter-use rooms. Always reseal immediately after any grout work — grouting is hard on the seal.
Can I use vinegar on marble tiles?
No, never. Vinegar is acidic and will permanently etch marble and limestone on contact. The damage is immediate and cannot be reversed without professional honing. Use a pH-neutral stone cleaner.
What's the best sealer for honed travertine?
A penetrating (impregnating) sealer designed for natural stone, applied in two coats with a 30-minute interval. Avoid topical sealers, which sit on the surface and can yellow or peel over time.
What's the difference between etching and staining on natural stone?
Staining is liquid absorbed into the stone — usually treatable with a poultice or hydrogen peroxide. Etching is a chemical reaction that has dissolved the stone surface — it cannot be cleaned away, only honed out professionally.