Wet Room or Walk-In Shower? How to Choose

What is the difference between a wet room and a walk-in shower?

A wet room has a fully waterproofed floor that slopes gently to a drain, with no shower tray and no step. The walls are waterproofed too, so water can land anywhere in the room. A walk-in shower is an enclosure, usually with a fixed glass screen and no door, sitting on a low-profile tray or a tiled base. The rest of the bathroom stays outside the wet zone. Both give easy access, but a wet room waterproofs the whole room while a walk-in shower waterproofs only the shower area.

Your floor decides what is realistic

To get water to a drain without a tray, the floor has to slope towards it. On a solid concrete floor that usually means cutting a recess into the screed or raising the floor level to hide the drain and waste. On a timber floor it often means a pre-formed sloping former fixed between or over the joists. Notching joists weakens them, so any cutting must be limited and checked, and the floor must be stiff enough for tanking and tiling or it will move and crack.

The waste matters just as much. The drain needs a run to the soil stack with enough fall, and in some rooms that cannot be done. A flat above shared drains, or a bathroom a long way from the stack, may need a raised floor, a tray or a pumped waste instead. Leasehold flats may need permission from the freeholder as well.

Waterproofing and ventilation

In a wet room the whole floor and the walls, to a good height, are tanked, with extra attention to corners, the drain outlet and any pipes passing through. In a walk-in shower on a tray, tanking goes behind the tiles at least inside the shower area, because water gets through grout. Either way the system has to be installed to the manufacturer's instructions, with cure times respected, because a failure behind finished tiles is a big job to put right.

Ventilation matters more in a wet room, where a larger area gets wet. An undersized or poorly ducted fan leaves condensation and mould on ceilings and grout. Building Regulations set expectations for ventilation when bathrooms are altered, so check with your local Building Control or ask us what applies to your job.

Tiles, drains and keeping it clean

A sloping floor is easier to tile with small tiles or mosaics, which follow the falls without awkward cuts, though they mean more grout lines to keep clean. Larger floor tiles work best with a linear drain, where the whole floor falls in one direction instead of four ways to a central point. Whatever the size, floor tiles in a wet area need a grip suited to wet bare feet. Drains need hair and soap cleared regularly, and a removable trap makes that easy.

Which one suits your home and household?

Neither is better in every house. The floor usually settles it, so check that first: what it is made of, how stiff it is and where the waste can run. After that, personal points come in, such as who uses the bathroom, how much space there is and whether you want a bath as well. These are the points that tend to decide it.

• A wet room suits small rooms where a tray would eat into the space, or where level, step-free access matters now or later
• A walk-in shower suits floors that are hard to slope, and homes where you want the rest of the bathroom to stay dry
• If you also want a bath in the room, a walk-in shower with a screen keeps splashing contained
• Upstairs timber floors and flats need the most checking before you commit to either
• A wet room involves more tanking and tiling, so it needs building carefully

Mistakes worth avoiding

Problems with these showers tend to be set up before any tiling starts. One is choosing a wet room and then finding the floor cannot take the fall. Another is a drain with too little fall for the water to clear, which leaves pooling and a damp smell. A third is a fan sized for a smaller room. The last is skipping the cure time on the tanking to keep the job moving. Every one of them is easier to avoid in the planning than to correct once the tiles are down.

Next steps

Send us photos of the bathroom, the floor, and the route of the waste pipe if you can see it, along with measurements and whether the room is upstairs or down. If you can lift a corner of the floor covering to show what is underneath, that helps too. Message us on WhatsApp and we will tell you honestly which suits the room, then give you a free, no-obligation quote.