How to clean and maintain tiles: the honest guide

The universal rule: pH-neutral, soft

For 95% of tile cleaning, the right answer is a pH-neutral cleaner (pH 7) and a soft mop. Anything acidic (vinegar, citrus, most bathroom cleaners) etches natural stone and can dull glazed surfaces over time. Anything alkaline (bleach, ammonia, oven cleaner) strips sealers and degrades grout.

The simplest universal cleaner: warm water with a few drops of pH-neutral dish detergent (e.g. Method, Ecover, plain Sunlight in Australia). Mop, rinse with clean water, dry. That's the regime for most tile most of the time.

Porcelain: zero-effort care

Porcelain is the easiest tile in existence to maintain. Non-porous, won't stain, won't etch from acid, won't fade from UV, no sealing ever required. The entire maintenance regime:

• Daily: sweep or vacuum to remove grit (the one thing that scratches porcelain — fine grit underfoot acts as sandpaper over years).
• Weekly:mop with pH-neutral detergent. That's it.
• Annually: nothing required. Some homeowners do a deep grout clean once a year (see grout section below).

Don't use steam mops on rectified porcelain (the steam can degrade some grouts). Don't use aggressive scouring pads. Beyond that, porcelain genuinely is set-and-forget.

Natural stone (marble, travertine)

Stone is porous and reactive. Two non-negotiables:

• Seal annually. Use a quality penetrating sealer (not a topical wax). Wipe on, let absorb 10 minutes, wipe off excess. A 60m² floor takes 30 minutes and costs $40-60 in sealer.
• Acidic spills wiped immediately.Wine, lemon juice, tomato sauce, vinegar, even sparkling water given enough time — they all etch stone, leaving permanent dull marks. The seal slows this down; it doesn't prevent it.

For routine cleaning: pH-neutral stone-specific cleaner (Lithofin or similar). Don't use generic floor cleaners — many contain mild acids or surfactants that strip the seal.

If you etch a marble tile, professional polish-grinding can sometimes restore it but costs more than replacing the tile in many cases. Treat etches as permanent.

Zellige and handmade ceramic

Zellige is glazed ceramic — the surface itself is reasonably tough. The vulnerability is the joint, not the tile. The hand-glazed surface variation also means cleaners sit in micro-pores for longer than on rectified porcelain.

• Use pH-neutral cleaner only. The glaze can dull from acid or alkaline cleaners over time.
• Soft cloth or sponge — never abrasive scourer.
• For splashback grime, a dilute dish-detergent solution and a microfibre cloth handles 99% of cooking residue.
• Sealing isn't required for the tile itself but a grout sealant on the wider joints helps prevent oil staining in kitchen splashbacks.

Terrazzo

Two types of terrazzo, two regimes. Porcelain-bound terrazzo (modern Italian inkjet ranges) cleans like porcelain — pH-neutral mop, no sealing, indestructible. Cement-bound terrazzo (the older traditional style) is porous, needs annual sealing, and etches with acidic cleaners just like marble. Confirm which type you have before cleaning.

Grout: the weak point

Grout is the single biggest maintenance issue on tile floors. Cementitious grout is porous, absorbs spills, and dulls or yellows over years. Three rules:

• Seal grout at install.Penetrating grout sealer applied 24-48 hours after grouting prevents 90% of staining issues. If your tiler didn't do this, do it yourself before the first major spill.
• Re-seal annually in wet areas. Bathrooms, kitchens, laundries. Every 2-3 years in dry living areas.
• Use epoxy grout in showers.Costs more, installs harder, but is non-porous and doesn't need sealing. The premium fix for shower grout problems.

For grimy grout, a soft toothbrush + dilute pH-neutral cleaner is the right tool. Don't use bleach unless mould is the specific problem (and even then, sparingly — bleach degrades grout polymer).

Outdoor tiles

Outdoor pavers face dirt, leaves, organic stains, mineral deposits from sprinklers, and chlorine near pools. Three components:

• Sweep weekly — leaves left to decompose stain pavers permanently within a few months.
• Pressure wash twice a year at low setting (≤1500 PSI). Higher pressure damages structured-finish pavers and erodes grout.
• For mineral deposits from hard water sprinklers, a pH-neutral mineral remover (specifically formulated, not generic descaler) works without etching the paver.

What never to use

• Vinegar, lemon, citrus on stone. Permanent etching.
• Bleach as a regular cleaner. Strips sealers, degrades grout polymers, can yellow over time. Reserve for specific mould issues.
• Ammonia or alkaline cleaners on natural stone.Strips the seal.
• Wax or oil-based polish on porcelain. Builds a residue that traps dirt and is hard to remove.
• Steel wool or abrasive scourers. Visible scratching on glazed and polished surfaces.
• Hydrochloric acid (ever). Sometimes recommended for cement haze removal — it works but the risk of damaging the tile and the substrate is real. Use a tile-specific haze remover instead.