Wet Room vs Walk-In Shower: Which Should You Choose?

Key takeaways

• A wet room gives a fully level, open floor; a walk-in shower gives most of the look for less money and risk.
• Like for like, a wet room costs £1,500 to £3,500 more than a walk-in shower in the same room.
• Wet rooms need the whole floor tanked and laid to falls, which is harder on upstairs timber floors.
• For accessibility, a level-access wet room is usually the better long-term choice.

On this page (23 sections)

1. The quick answer
2. What is a wet room?
3. What is a walk-in shower?
4. Wet room vs walk-in shower: side by side
5. Wet room cost vs walk-in shower cost (UK 2026)
6. Pros and cons of a wet room
7. Pros and cons of a walk-in shower
8. Waterproofing, formers and drainage done properly
9. Building regulations both options must meet
10. Small bathrooms and en-suites
11. Accessibility: level access, Part M, grants and VAT relief
12. Are wet rooms a good idea? The honest answer
13. Do wet rooms add value?
14. Wet room vs shower room: what is the difference?
15. How long does each take to install?
16. Five mistakes to avoid
17. Which should you choose?
18. Wet rooms and walk-in showers in Southampton
19. Choosing tiles for a wet room
20. Underfloor heating in a wet room
21. Warranty and insurance
22. Designer, fitter or renovation company?
23. Wet room checklist before you start

A wet room is a fully waterproofed room with a level floor and no shower tray; a walk-in shower sits on a low tray behind a glass panel. Like for like, a wet room costs £1,500 to £3,500 more in 2026 and takes one to two days longer, so choose a wet room for full level access or a seamless look, and a walk-in shower for most of the look with less cost and risk.

This guide explains how each is built, what each costs in 2026 by room size, the pros and cons, the building regulations both must meet, the accessibility and resale questions, and a straight answer on which to choose for your home.

The quick answer

• Choose a wet room if you want a fully open, level floor, the cleanest possible look, or level access for a wheelchair or reduced mobility.
• Choose a walk-in shower if you want most of the look for less money and less risk, especially on an upstairs timber floor.
• Like for like, a wet room costs £1,500 to £3,500 more than a walk-in shower in the same room, and takes one to two days longer.

What is a wet room?

A wet room is a bathroom where the shower area has no tray and no step. The whole floor is built to a gentle fall towards a drain, the floor and the lower walls are tanked with a continuous waterproof membrane, and the floor is tiled straight over the top. In most homes a fixed glass screen contains the spray, though a fully open room is possible. Underfloor heating is near universal in a well-built wet room because it dries the floor between uses.

Underneath, a wet room is a small piece of engineering: a former or built-up screed creates the fall of around 1:50 to 1:80 towards a linear drain along one edge or a central gully, the trap under the drain holds a water seal of at least 50 mm, and the tanking, either a liquid-applied membrane or a sheet system, runs continuously across the floor and up the walls before a single tile goes down.

What is a walk-in shower?

A walk-in shower uses a shower tray, usually a low-profile one 25 mm or slimmer, with one or two fixed glass panels and no door. The tray does the waterproofing and drainage for you: it is a sealed unit with its own waste, so the rest of the floor stays a normal bathroom floor. Trays come in acrylic, stone resin and slate-effect finishes and can be recessed into the floor for a near-flush finish. Layouts run from a single panel at the open end to a corner, a recessed alcove or a floating panel in the middle of the room.

Wet room vs walk-in shower: side by side

Wet room cost vs walk-in shower cost (UK 2026)

A wet room costs £3,800 to £18,000 or more depending on size, with a national average around £9,000, while a walk-in shower's tray, screen, valve and fitting come to £1,500 to £4,000.

Wet room cost by room size (2026, ex VAT)

Small en-suite, 2 to 3 m²£3,800 to £6,500

Family bathroom, 4 to 6 m²£6,500 to £11,000

Large or high-specification, 6 to 10 m²£12,000 to £18,000

£0£10k£20k

Wet room cost by room size

The national average is around £9,000, or roughly £1,500 to £3,500 per m² all in. Design-led wet rooms with porcelain or stone, designer brassware and bespoke joinery run £10,000 to £25,000 and above.

Walk-in shower cost

The shower itself, a low-profile tray (£300 to £800), an 8 mm glass screen (£250 to £700), a thermostatic shower (£250 to £900) and fitting, comes to £1,500 to £4,000. A full mid-range bathroom built around a walk-in shower runs £8,000 to £15,000, in line with the figures in our bathroom cost guide.

Why a wet room costs more

Take the same room and compare: the wet room needs the floor cut or built up to a fall (£400 to £900), a former or screed and a linear drain (£300 to £800), full tanking of floor and walls (£300 to £700 in materials plus a day's labour), more complex tile cuts around the drain, and usually underfloor heating. It saves the tray. Net, expect £1,500 to £3,500 more than the walk-in equivalent.

Wet rooms in Southampton

In Southampton, a bespoke wet room from us typically starts around £15,000, and luxury wet rooms with steam showers or bespoke joinery run £30,000 to £55,000. That is the design-and-build end: design, trade-priced supply, the same plumber, tiler and electrician throughout, and the tanking and certification done as a matter of course. Our bespoke bathrooms page covers what that includes.

Pros and cons of a wet room

Pros: a seamless, level floor that makes any room feel larger; true level access; the easiest bathroom to clean; no tray or door to fail; the highest-end look. Cons: costs more; needs skilled tanking and a correct fall, so the installer matters more; without a screen and heating it can feel cold and everything gets wet; more work on upstairs timber floors; removing the only bath can affect resale.

Pros and cons of a walk-in shower

Pros: cheaper; quicker to fit; the tray handles the waterproofing so there is less to get wrong; splash is contained; simpler upstairs. Cons: a tray edge, however slim, is still a step and a line across the floor; the look is a touch less seamless; a tray can crack or the seal can fail over time; less ideal for wheelchair access unless recessed flush.

Waterproofing, formers and drainage done properly

Falls. The floor needs a gradient of around 1:50 to 1:80 towards the drain, enough to clear water without feeling like a ramp. A preformed former does this reliably; a hand-laid screed relies entirely on the tiler.

Drains. A linear drain along the wall or the threshold of the shower zone lets you use large-format tiles with a single fall in one direction; a central gully needs four falls and diagonal tile cuts. Choose a drain with at least a 50 mm trap seal, which is what Approved Document H requires for a shower, and an accessible filter.

Timber floors. Upstairs, the joists must be stiff enough not to flex, or the tanking and grout will crack. Joists are doubled up where needed, the former is set between them, and the tanking becomes even more critical because the room below is at stake.

Screens. An 8 mm toughened glass screen, 900 to 1200 mm wide, contains spray on a normal-sized room and keeps the rest of the bathroom warm and dry.

Building regulations both options must meet

Neither a wet room nor a walk-in shower needs planning permission, but building regulations apply to both:

• Part P: new circuits, underfloor heating and lighting must be installed and certified by a registered electrician, with all bathroom circuits protected by a 30 mA RCD and fittings rated for the bathroom zones.
• Part F: an extractor fan rated at 15 litres per second intermittent or 8 continuous, and a wet room benefits from continuous or humidity-sensing extraction.
• Part H: new or altered drainage, including a new floor drain, needs building control approval.
• Part G: hot water safety, including thermostatic mixing where required.
• Part M (new dwellings only): not required for a bathroom refit, but its wheelchair-accessible standard is a useful design reference for an accessible bathroom, typically a 1200 by 1200 mm shower zone and a 1500 mm turning circle.

A good installer handles the certification. Check the current Approved Documents for the exact figures, which are revised periodically.

Small bathrooms and en-suites

A wet room usually makes a small room feel bigger, because there is no tray or enclosure breaking up the floor and the tiles run wall to wall. The catch is splash: in a room under 3 m² everything gets wet unless you fit a screen, and a screen in a tiny room can feel like an enclosure by another name. A walk-in shower with a slim, recessed tray is the safer choice where the floor cannot easily be built to a fall, and a fixed panel does the same containment job. Either way, wall-hung sanitaryware and a linear drain along the far wall make the most of the space.

Accessibility: level access, Part M, grants and VAT relief

For a wheelchair user or anyone with reduced mobility, a wet room is the safest option: no step, no tray edge, room for a shower seat and a carer, and grab rails fixed into tanked, solid walls. A recessed low-profile tray is a good middle ground, but a true level floor is the safest option for accessible bathrooms. Two things to know early: certain adaptations for a disabled person can be zero-rated for VAT when supplied to that person, and the Disabled Facilities Grant, run by local councils after an occupational therapist assessment, can fund level-access showers for eligible applicants. Both take time, so raise them before the design is fixed. We are happy to work alongside an occupational therapist where one is involved.

Are wet rooms a good idea? The honest answer

Yes, when they are built properly and designed for the room. The complaints you read online, cold rooms, wet towels, leaks, slippery floors, all trace back to the same few mistakes: no screen, no underfloor heating, an undersized extractor, a floor with too little fall, or tanking done badly. Get those five right and a wet room is warm, dry between uses, easy to clean and the nicest room in the house. Choose tiles with a wet-area slip rating of R10 or R11 for the floor.

Do wet rooms add value?

A well-built wet room adds about as much as a good walk-in shower bathroom, and it is a real draw for buyers who want level access or a contemporary look. The one risk is removing the only bath in a family home. If you have a single bathroom, keep a bath somewhere, or accept that some buyers with young children will mark the house down.

Wet room vs shower room: what is the difference?

People use the terms loosely. A shower room is any bathroom with a shower and no bath, usually with a tray and enclosure; a wet room is specifically one with a tanked, graded floor and no tray. Most wet rooms are shower rooms; most shower rooms are not wet rooms.

How long does each take to install?

A walk-in shower can be fitted in two to three days as part of a bathroom refit. A wet room adds one to two days for cutting or building up the floor, fitting the former and drain, and letting the tanking cure before tiling. Within a full bathroom renovation, expect two to four weeks on site for either, four to six weeks for a bespoke design-and-build room, and six to eight where a large wet room or a moved soil pipe is involved.

Five mistakes to avoid

1. Skimping on tanking or tiling before it has cured.
2. Too little fall, so water pools, or too much, so it feels like a ramp.
3. No screen and no heating, which is how wet rooms get their reputation.
4. Ignoring the floor structure upstairs, so grout cracks and the ceiling below suffers.
5. The wrong tiles: polished porcelain or stone that is lethal wet, instead of an R10 or R11 rated finish.

Which should you choose?

• Level access is a must: wet room.
• Upstairs on a bouncy timber floor and a tight budget: walk-in shower.
• Small en-suite where you want it to feel bigger: wet room with a screen.
• You want most of the look for £1,500 to £3,500 less: walk-in shower with a recessed tray.
• Family home with one bathroom: either, but keep a bath.

Wet rooms and walk-in showers in Southampton

We design and build both across Southampton, Fareham, Hedge End, Eastleigh and Winchester, tanking every wet room as standard, fitting underfloor heating and a correctly sized extractor, and handling all the certification. For the full budget picture see our bathroom cost guide, and for tight rooms our small bathroom ideas. Whether a wet room or a walk-in shower is right depends on your floor, your room and how you live, which is exactly what we work out at the free design consultation.

Choosing tiles for a wet room

The floor tile matters more in a wet room than in any other bathroom, because there is no tray to stand on. Look for a slip rating of R10 or R11 for barefoot wet areas and avoid polished porcelain or honed stone on the floor. Smaller formats, mosaics or tiles up to 300 mm, are easier to lay to a fall towards a central gully; large-format tiles suit a linear drain with a single fall. Porcelain is the practical choice: dense, low-porosity and consistent. Natural stone is beautiful but needs sealing and resealing and reacts badly to some cleaners. Use a mould-resistant, flexible grout and a bathroom-grade silicone at every junction.

Underfloor heating in a wet room

Electric underfloor heating is close to essential in a wet room. It dries the floor between uses, which is the single biggest factor in keeping a wet room hygienic and slip-free, and it takes the chill out of a room that has no bath to warm it. Fitted under the tiles above the tanking, it adds £400 to £900 to the project and a few pounds a month to run on a timer. Pair it with a heated towel rail so towels dry properly too.

Warranty and insurance

Ask the installer what warranty covers the tanking specifically, not just the fittings. Reputable tanking systems carry manufacturer guarantees of ten years or more when installed by an approved fitter, and a good installer will put their own workmanship guarantee in writing. Tell your home insurer about the work; a wet room is not a problem for insurers, but a leak from an undisclosed one can be.

Designer, fitter or renovation company?

A bathroom showroom sells you the fittings and often subcontracts the installation; a fitter installs what you have bought; a design-and-build renovation company does the lot with one team and one point of responsibility. For a walk-in shower, a good fitter is often all you need. For a wet room, where the floor structure, tanking, drainage, electrics and tiling all have to be right and all depend on each other, one accountable team is the safer route.

Wet room checklist before you start

1. Is the floor structure stiff enough, or does it need doubling up?
2. Where will the drain go, and does the waste route have enough fall to the soil stack?
3. Linear drain or gully, and which way will the floor fall?
4. Liquid or sheet tanking, and how high up the walls?
5. Screen or fully open, and where will the towels live?
6. Underfloor heating and a heated towel rail in the electrical plan?
7. Extractor rated to at least 15 litres per second and ducted outside?
8. Floor tiles R10 or R11, wall tiles chosen to suit the drain type?
9. Who certifies the electrics and the drainage?
10. What warranty covers the tanking, in writing?

Figures are based on published UK trade cost guides, adjusted for south Hampshire rates.

Written by

The Pure Renovation & Design team

A Southampton design-and-build company whose team has 18 years of hands-on experience in extensions, loft conversions, full renovations, bathrooms and joinery across Hampshire. Prices are cross-checked against published UK trade cost guides and official fee schedules, and reviewed whenever prices or rules change.

Last reviewed 13 October 2026 · About the team

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