Wet Room or Shower Tray? How to Decide
Last updated 13 June 2026 · Decision guide · 6 min read
A shower tray is a manufactured unit that sits on the floor with a lip of some kind, even if that lip is only a few millimetres. A wet room has no tray at all: the floor itself is laid to a fall, tanked, and drains through a gully. Both can be accessible. The right answer depends on the floor you already have, who is using the room and whether a carer or a wheeled shower chair needs to come in with them.
Any figures on this page are indicative ranges for guidance only, not a quotation from Bathroom Adaptations Ltd. Your price and schedule are confirmed in a written quotation after a free home survey.
The real difference is the floor, not the shower
Trays and wet rooms end up looking similar once tiled, so people assume the choice is cosmetic. It is not. A tray sits on top of the existing floor and drains into a waste beneath it, so the floor structure barely changes. A wet room requires the floor to be rebuilt to a gradient and waterproofed as a single continuous system before any finish goes down.
That is why the survey looks at the floor first. Timber floors need the joists assessed so the fall and the drain can be accommodated; solid floors need a section cut and re-laid. Neither is a problem, but both change the scope of the work, which is the honest reason wet rooms cost more.
| Shower tray | Wet room | |
|---|---|---|
| Step at the entry | Low lip, typically around 40mm on a low-profile tray | None — floor is flush |
| Floor works | Minimal | Floor rebuilt to a fall and tanked |
| Wheeled shower chair | Possible on some low trays, not ideal | Designed for it |
| Disruption | Lower | Higher |
| Repair if damaged | Tray can be replaced | Section of floor must be reopened |
When a tray is the better choice
If the person using the room can lift a foot a few centimetres reliably, a low-profile tray does the same daily job with less upheaval. Trays also suit upstairs bathrooms where the joists cannot easily lose depth, and rented or shared properties where a reversible installation matters.
There is a practical maintenance argument too. A tray is a replaceable component; a wet room floor is part of the building. If something is damaged years later, the tray is a smaller job.
When a wet room earns its cost
A wet room is the right call when even a small lip is unsafe or impossible — wheelchair users, people who shower seated on a chair with castors, people with a high falls risk, or where a carer assists the transfer and needs to stand alongside without stepping over anything.
Small bathrooms are the other case people miss. Removing the tray and screen from a tight room gives back usable floor, which often matters more than the shower itself when a frame or a second person has to fit in.
What both should include, whichever you pick
The specification underneath matters more than the label on the finished room.
- Slip-resistant surface in the wet area, not a standard smooth tile
- Grab rails fixed into solid backing — a stud, noggin or installed pattress, never plasterboard alone
- A thermostatic anti-scald mixer valve
- Waterproofing behind the finish, not silicone doing the job on its own
- Ventilation that can actually clear the moisture the room now produces
- Seating specified around the transfer, whether fold-down or free-standing
Frequently asked questions
Is a wet room always more accessible than a shower tray?
Not automatically. A well-positioned low tray with correct rails and a seat can be safer for an ambulant person than a poorly planned wet room. Accessibility comes from the layout, the rails, the seating and the slip resistance as much as from the absence of a step.
Can a wet room be fitted upstairs?
Usually, but the timber floor has to be assessed first because the fall and the drain need to be accommodated within the structure. That is a survey question rather than something anyone can answer over the phone.
Will a wet room make the whole bathroom wet?
No, when it is planned properly. The floor falls towards the drain and a screen or a well-placed shower position keeps the rest of the room usable. Ventilation and slip-resistant flooring handle the rest.
Which is cheaper to install?
A tray, because the floor structure is largely left alone. A wet room involves rebuilding and waterproofing the floor, which is labour. Your actual figures are confirmed in a written quotation after the free home survey.
Related reading
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