Tiles to Avoid in Showers (And What to Use Instead)

Not every tile belongs in a shower. A tile that works well on a bathroom wall or bedroom floor may become slippery, difficult to clean, or unsuitable once it is exposed to daily water, steam, soap, and bare feet.

This guide explains which tiles to avoid in showers, why they cause problems, and what to use instead for a safer, longer - lasting bathroom.

If you are still in planning mode, start with practical bathroom tiling decisions and align tile choice with the way the shower will actually be used.

Large tiles, especially 600x600 mm and above, are usually not ideal for shower floors because shower floors need a proper slope toward the drain.

Drainage is harder to detail neatly with big formats on sloped surfaces, and poor falls can leave ponding water.

Large formats also reduce grout line frequency, which can lower underfoot grip when the floor is wet.

Cutting large tiles around drains and directional falls requires high skill and can look poor if not planned early.

What to use instead: Smaller shower - floor tiles, usually 150x150 mm to 300x300 mm, with a suitable non - slip finish. Mosaics can also work well because extra grout lines can improve grip.

For more context on tile scale and layout, see small bathroom tile choices.

Polished porcelain and high - gloss ceramic may look attractive, but they can be dangerous under wet feet and are usually a poor choice for shower floors.

As a general guide: R9 is better suited to dry areas and should not be used on shower floors. R10 is more suitable for wet residential areas. R11 is generally better for high - moisture areas like shower floors. R12 and above are more common in commercial or industrial wet spaces.

What to use instead: Matte, honed, textured, or anti - slip porcelain rated around R10 to R11 for residential shower floors.

Always confirm actual slip - rating suitability with the tile supplier before you buy.

Natural stone such as marble, travertine, limestone, and sandstone can be beautiful, but it is porous and needs proper sealing and maintenance in a shower.

Without correct sealing and upkeep, common issues include staining that is difficult to remove, gradual water absorption, soap and mineral buildup, etching from acidic cleaners or shower products, and slippery surfaces depending on the finish.

What to use instead: Stone - look porcelain gives a similar visual result with lower maintenance. If real stone is selected, it should be sealed properly before installation and maintained regularly after handover.

Wall tiles should not be used on shower floors. They are usually thinner, smoother, and not rated for the slip resistance or foot traffic expected in wet floor zones.

What to use instead: Use floor - rated porcelain or ceramic tiles with a suitable wet - area slip rating.

Dark tiles can look premium, but they also show water marks, soap residue, and mineral deposits faster than mid - tone or lighter options.

Cape Town water, like water in many parts of South Africa, can leave visible white mineral marks on dark shower tiles.

This does not mean dark tiles are wrong. They can work beautifully as a feature wall or in a well - ventilated bathroom, but homeowners should understand the cleaning commitment.

Tiles with deep grooves, heavy embossing, or rough surface texture can trap soap, mineral residue, and mildew in daily use.

They may look attractive in a showroom, but maintenance is often harder once installed in a working shower.

What to use instead: Subtle texture, satin finishes, stone - look porcelain, or smooth porcelain that is easier to clean.

Ceramic tiles can work in many bathroom wall zones, but porcelain is usually the safer choice in direct shower spray areas because it has lower water absorption and stronger moisture performance over time.

What to use instead: Use porcelain in the main shower zone, especially for walk - in showers and direct spray areas. Ceramic can still work in lower - splash wall areas when installed correctly.

Use this as a practical comparison before final tile selection:

Tiles and grout help protect the visible surface, but they are not the full waterproofing system.

A shower needs proper waterproofing behind the tiles, correct falls to drain, suitable adhesive, grout, silicone joints, and careful installation.

Before choosing final tile finishes, it is worth understanding why bathroom waterproofing before tiling matters just as much as the tile itself.

Check slip rating before buying shower - floor tiles.

Choose smaller formats or mosaics where floor falls to drains are needed.

Use porcelain in the main shower zone where possible.

Avoid glossy tiles underfoot.

Consider cleaning load, not only appearance.

Ask about water absorption and maintenance if choosing natural stone.

Plan waterproofing before tile installation.

Match grout and silicone choices to tile format and shower design.

For broader planning, review bathroom renovation challenges.

The safest shower tile choices are usually matte or honed porcelain, smaller floor tiles, mosaics, and easy - clean wall finishes.

Tiles to avoid include polished tiles underfoot, unsuitable wall tiles on floors, unsealed stone, very large shower - floor tiles, and deeply textured surfaces that trap dirt.

A good shower depends on both the right tile and the right installation.

Planning a shower renovation in Cape Town? Send Excellence Tilers your suburb, a few photos of the space, and the type of look you want. We can help you choose shower tiles that are practical, safe underfoot, easier to maintain, and properly installed.

Next step: Request a Quote, message us via Contact, or explore Bathroom Tiling Services.