A wet room is not just a normal shower with fewer screens. The floor, walls around the shower, drain route and waterproofing have to work together. When wet rooms fail, the visible tile is rarely the main cause. The problem is usually movement, poor falls, weak tanking or drainage detail.
Wet room cost matrix
| Project type | Typical planning band | What usually drives the cost |
|---|---|---|
| Simple conversion | About £4,000 to £7,000 | Small room, reasonable drainage, standard fittings, limited floor build-up and practical finish. |
| Fully tiled wet room | About £7,000 to £12,000 | More tanking, tile labour, floor former, screen, better fittings and careful falls to drain. |
| Level-access or awkward drainage | Often £10,000 plus | Floor lowering, pumped waste, joist or concrete work, access features and layout changes. |
| Premium finish | Highly variable | Large-format tiles, niches, underfloor heating, concealed valves, custom glass and lighting. |
Wet room cost estimator
Use this to understand the cost pressure points before a survey.
What affects a wet room quote?
Waterproofing
Tanking is the layer that protects the structure. It should be specified as a system, not improvised behind the tiles.
Fall to drain
The floor needs to send water to the drain without pooling at the door, toilet or vanity.
Drain route
Getting waste pipework away at the right fall can be simple in one room and awkward in another.
Floor build-up
Timber floors, concrete floors and level-access designs all change the labour and product choice.
Checklist before approving a wet room
- Confirm how the shower area and surrounding floor will be tanked.
- Confirm the floor fall and drain position before tiles are ordered.
- Check the waste route, pipe size and access for future maintenance.
- Decide whether the room needs level access, grab rails, seating or future mobility allowance.
- Choose tile or vinyl with slip resistance and cleaning in mind.
- Make sure ventilation is part of the plan, not an afterthought.
For a survey-led wet room plan with floor falls, drainage and waterproofing checked first, see ABC Home’s bathroom fitting service in Aberdeen.
Sources and checks used
- MyJobQuote wet room cost guide: broad UK installation cost context and typical project duration.
- LABC Warranty wet room construction guidance: technical reminders around wet room construction, waterproofing and drainage detail.
FAQ
How much does a wet room cost in the UK?
A practical planning range is often about £4,000 to £10,000 plus, with simple conversions at the lower end and fully tiled, level-access or difficult drainage jobs higher.
Why are wet rooms expensive?
The hidden work drives the cost: waterproofing, floor falls, drainage, floor build-up, tile labour and access details.
Can any bathroom become a wet room?
Many bathrooms can, but the floor structure, drain route, ventilation and available falls need checking first.
Is a wet room cheaper than a normal shower room?
Usually not. A wet room can look simpler, but it often needs more waterproofing and floor preparation than a standard shower enclosure.
