The Best Bathroom Tiles for Wet Rooms in 2026

Choosing tiles for a wet room is half aesthetics, half engineering. Get the engineering right first — the aesthetics get a lot easier. Here’s how we specify tiles on every wet room we build, from a £9k Watford en-suite to a £15k Rickmansworth principal bathroom.

Slip ratings: the only number that matters

Look for an R-rating (ramp test) or a PTV (pendulum test value). For a wet-room floor we will not lay anything below R11 or PTV 36. Anything below that is dangerous wet, full stop. Wall tiles can be R9 — they aren’t walked on. If a supplier can’t give you the rating, don’t buy from them.

Porcelain over ceramic — every time

Porcelain is fired at higher temperatures, has a water absorption of <0.5% (vs 3–10% for ceramic), and won’t craze if you drop a shampoo bottle. We use porcelain on every wet-room floor and almost every wall. The price difference is now negligible (~£5–£10/m²).

Natural stone: beautiful, demanding

Marble, limestone and travertine all work in wet rooms — but they must be sealed before grouting, sealed again after grouting, and resealed every 12 months. Honed (matte) stones are far safer underfoot than polished. If you’re not prepared to maintain them, choose a porcelain marble-effect instead.

Large format: fewer joints, more wow

600 × 1200mm tiles have become our default. Fewer grout lines means fewer maintenance points, a more expensive look, and a slightly easier waterproofing job. We will not lay anything larger than 1200mm without back-buttering and a notched 10mm trowel — get this wrong and you get lippage forever.

Grout: the bit no one thinks about

Standard cementitious grout will discolour in a high-use wet room within 24 months. We use epoxy grout (Mapei Kerapoxy CQ, Laticrete SpectraLOCK) on every wet-room floor — it costs more in labour but it’s waterproof, stainproof and lasts the life of the room. On walls, premium urethane grouts are an acceptable middle-ground.

Tanking is not optional

Tiles do not waterproof a bathroom — the membrane behind them does. We tank every wet-room floor and the lower 1.8m of every wall with a liquid-applied membrane (Schlüter Kerdi, Mapei Mapelastic), with banded internal corners and waste-pipe collars. No tanking, no warranty.

Our top tile picks for 2026

For a luxury hotel-feel: large-format porcelain marble-effect with a satin finish, paired with a micro-mosaic on the shower floor for grip. For a warmer feel: porcelain wood-effect planks on the floor with a hand-glazed zellige on the walls. For an architectural minimal: full-room micro-cement with a single porcelain feature slab.

Want help choosing?

We carry samples of every tile we recommend and will leave them with you for a week. Most clients spec the wrong tile on a Pinterest mood-board and the right tile when it’s in their hand. Book a free consultation and we’ll bring twelve options.