How to Choose the Right Tiles for a Small Bathroom

Small bathrooms punish bad tile choices more than large ones do. A colour or format that looks fine on a sample card can make a 5’ x 7’ room feel like a cupboard. I’ve tiled hundreds of small bathrooms across south London and I’ve watched clients make the same mistakes. Here’s what I’d tell you before you go near a tile showroom.

The myth about small tiles in small spaces

The old advice was always “use small tiles in small rooms.” It’s wrong, or at least it’s incomplete. Small tiles mean more grout lines, and more grout lines mean more visual breaks across a surface. That chops the eye up rather than letting it read across the room.

Large format tiles — 600×600 or 600×1200 — can make a small bathroom feel significantly bigger, provided the proportions work and the walls are in reasonable condition. The fewer grout lines there are, the more continuous the surface reads, and the more space appears to open up.

That said, there’s a practical limit. A 1200×2400 slab tile in a bathroom with 2m ceiling height and an awkward alcove is going to cause cutting waste and installation problems. The key is large format relative to the room, not oversized tiles crammed in regardless.

What colour actually does

Light bounces off pale surfaces. Dark tiles absorb it. In a room without natural light — many south London Victorian bathrooms have one small frosted window — dark tiles will make the space feel smaller every single time. This isn’t aesthetics, it’s physics.

If the client wants dark tiles, I’ll usually suggest using them on one wall only — typically the wall behind the bath or the shower feature wall — with pale tiles elsewhere. That gives you the drama without the compression.

White, cream, and pale grey remain the best choices for a small bathroom with light issues. They’re not boring choices — the surface finish, the grout colour, and the tile format do all the work.

Grout width and colour

This is the thing most people don’t think about at the tile selection stage and then regret later.

Matching grout to tile colour — mid-grey grout with grey tiles, off-white grout with white tiles — minimises the visual grid and makes the surface read as one plane. That’s what you want in a small room.

Contrasting grout — white tiles with dark grout — emphasises every joint. In a large format tile that’s fine, it’s a design choice. In a 200×100 metro tile covering four walls of a small bathroom, it creates a lot of visual noise.

For small bathrooms, I almost always recommend matching or near-matching grout unless the client specifically wants the contrast for a design reason. It’s a small thing that makes a noticeable difference.

Format options that work well

Metro tiles (200×100 or 300×100) are popular for a reason. They’re versatile, not too busy, and the horizontal bond pattern reads well in a small room. Stacked vertically they elongate the space. Used in a herringbone they add interest without being overwhelming.

Large format porcelain (600×600 or 600×1200) works well in small bathrooms provided the subfloor is solid and level. The fewer joints are a genuine visual benefit. The downside is cost: more material is wasted in cuts, and installation takes more time.

Mosaic tiles (small tiles on mesh sheets) are often used in wet room floors for the drainage gradient. On walls they can look good but add a lot of grout lines. I’d use them as an accent — shower niche, bottom course — rather than full wall coverage.

Brick bond vs stack bond: Brick bond (offset joints) is the standard and there’s a reason — it hides any slight variation in tile sizing and is forgiving to install. Stack bond (tiles perfectly aligned vertically and horizontally) looks sharp but requires tiles with very consistent sizing and careful installation. Any deviation shows.

Practical point about tile weight

Large format tiles are heavy. On a wall, they need the right adhesive — a C2 deformable adhesive rather than standard C1 — and they need back-buttering (adhesive applied to both wall and tile back). In older properties with lime plaster walls, there’s a conversation to be had before committing to 600×1200 wall tiles about whether the substrate is up to it.

A tiler who skips these steps is leaving you with tiles that will eventually de-bond, and in a small bathroom that means emptying the room and starting again.

My honest advice

Pick the largest format tile you can practically fit without excessive cuts. Match the grout. Go pale if the room is dark. Don’t get talked into a mosaic feature wall by a showroom — it’s labour-intensive to install, labour-intensive to clean, and rarely looks as good in the finished room as it does as a sample.

The best small bathroom tiles are the ones you stop noticing. They make the room feel like a room rather than drawing attention to themselves.

I’m happy to look at your bathroom and tell you what I think will work — a site visit takes 20 minutes and saves you an expensive rethink halfway through.

Related reading: Large format tiles — what to know before buying · Why tiles crack · Bathroom tiling service