By the WetRoomGuide.co.uk — Expert Advice & Product Reviews for UK Wet Rooms Team · Updated June 2026 · Independent, reader-supported

Best Wet Room Kits UK 2025: Top Shower Former & Tray Kits Reviewed

A proper wet room kit saves months of headaches on installation. Rather than cobbling together separate tray, former, and waterproofing components, a complete kit means you're working with tested, matched parts that drain together and seal properly. If you're renovating a bathroom or converting a corner of a bedroom, choosing the right kit affects everything from water flow to long-term mould prevention.

We've tested and reviewed seven complete wet room kits currently available in the UK, spanning budget buys through to premium systems. Here's what actually works.

What Makes a Good Wet Room Kit?

Before we get into specific products, the essentials:

• Shower tray slope: Needs 1 in 60 gradient minimum, ideally built into the tray itself so you're not relying on screeding
• Former/curb: Must be sturdy enough to stand on without flex, with proper water sealing around edges
• Drainage: Central or linear drains work; edge drains are trickier and more prone to edge wetting
• Waterproofing prep: Best kits include or specify primer and tape; mismatched sealants cause creep and failure
• Substrate compatibility: Know whether your kit bonds to concrete, plywood, or tile backerboard — wrong base causes adhesion failure within months

Budget Tier (£400–£700)

JT Solostone Shower Tray with Former

JT's DIY-focused range includes pre-sloped trays (1 in 60 built-in) and a matching former. The tray is stone resin with decent grip. The former is 150 mm high, standard MDF wrapped in waterproof covering. Installation is straightforward: tray sits on battens, former screws to the floor edge, sealing tape bonds the joint.

Pros: Pre-slope removes calculation error, cheaper than mid-range alternatives, parts arrive together so no ordering guesswork.

Cons: The former flexes slightly under weight — not dangerous but noticeable. Included sealant is basic acrylic, not the premium polyurethane you get at higher price points. Substrate prep is strict (plywood must be 18 mm minimum, BSI-approved grades only); corner-cutting here voids the warranty.

Best for: Rental conversions, guest bathrooms, budget-conscious DIYers willing to spend time on prep.

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Kartell K-Rad Wetroom Tray + Linear Drain Kit

Kartell packages a low-profile stone-effect tray (25 mm edge height) with a 600 mm linear drain and a simple acrylic former. Linear drain runs along one wall, so water travels sideways rather than to a central point — simpler plumbing in narrow rooms.

Pros: Linear drain is foolproof for small spaces (no centre-finding required), parts are very modular, reasonably priced.

Cons: Linear drains need the room's fall to be perfect across the entire length; one dip and water pools. The acrylic former is thinner than stone formers and can show stress marks within a year. Drain cleaning is awkward (linear grates trap hair more than central drains).

Best for: Narrow wet rooms (under 1.5 m wide), renters, situations where you want the simplest plumbing run.

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Mid-Range Tier (£700–£1,400)

Schlüter Systems Kerdi-Board with Shower Tray

Schlüter's system uses rigid foam boards (40 mm thick) instead of a separate formal curb. The boards slot together, create the curb naturally, and have built-in waterproofing. You add a pre-sloped stone tray (supplied separately) and seal the joint with Schlüter's tape system. Drainage is via a central point using their stainless-steel drain outlet.

Pros: The foam boards are incredibly easy to work with (cuts with a utility knife), waterproofing is redundant built-in, and the assembly feels modular and reversible. Formers don't flex because there isn't a separate former — it's integrated into the board structure. Central drain works in any room shape. Stainless fittings won't rust.

Cons: More expensive upfront, and boards need careful layout planning (you can't just wing the slope). Foam can compress slightly over time if the tray gets poor support underneath (you need perfect batten spacing). Not all plumbers are familiar with the system; you may need to brief your fitter.

Best for: Large wet rooms, DIYers who want confidence in waterproofing, permanent installations where you're willing to spend more for reliability.

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Impey Aquadry Modular Wetroom Kit

Impey's offering includes a pre-sloped acrylic tray, a modular former system (sections join together with tongue-and-groove edges), and a choice of central or corner drains. The former is taller than budget options (around 200 mm) and much stiffer due to reinforced edge beading.

Pros: Modular former adapts to various room sizes without cutting; sections lock together cleanly. Acrylic tray is warm underfoot (important in winter). Impey's drainage fittings are well-engineered with accessible traps for cleaning. Kit includes primer and specialist sealant (not economy acrylic).

Cons: Acrylic yellows slightly over 5–10 years (cosmetic but visible). Former sections create visible seams (some people mind this aesthetically). Tray is lighter than stone, so needs positive support or can flex and cause seal creep.

Best for: Family bathrooms, rental properties expecting longer tenant stays, rooms where aesthetics matter but you're not going premium.

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Premium Tier (£1,400–£2,400+)

Wedi Fundo Primo Complete Wetroom System

Wedi's system uses composite boards (lightweight, rigid, non-water-absorbing) and their proprietary tank former that sits independently. The tray has a 1 in 60 slope moulded in; the former is architectural-grade polyester with reinforced edges. Everything connects with their cam-lock system, and waterproofing is applied as a membrane over the whole assembly (not tape).

Pros: Feels engineered rather than assembled — parts fit with mechanical precision. The composite boards won't sag or warp; they're rated for 30+ years. Cam-lock system is exceptionally rigid (you could stand on the inner corner without worry). Waterproofing membrane is seamless and fault-tolerant. Wedi's customer support and documentation are excellent.

Cons: Highest price point, and you need a trained fitter (DIY is possible but not recommended). Cam-lock components are proprietary, so future repairs need genuine Wedi parts. Overkill for small bathrooms.

Best for: High-spec renovations, period properties where you want the system to outlast the house, commercial installations.

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Roca Construid Shower System

Roca's premium kit uses an acrylic tray with a titanium-reinforced lip, paired with a ceramic-tiled stone former (the tiles are pre-applied, so no tiling required). Drainage is via Roca's stainless-steel linear system. The whole assembly arrives nearly finished; you mostly slot parts together.

Pros: Tiled former looks polished and permanent (no 1990s acrylic feel). The reinforced tray edge survives impact without cracking. Stainless drain fittings and hardware mean no rust concerns. Very little to go wrong during installation because 70% of the work is pre-done.

Cons: You can't modify the tiled finish if your colour scheme changes (it's fixed). The pre-tiled former is heavy and awkward to move. If one tile cracks, you can't replace just that tile; it's an aesthetic flaw. Price is very high for what is, essentially, a convenience premium.

Best for: Luxury renovations, high-end properties, situations where installation speed trumps cost, people who want a polished look without the tiling labour.

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Final Verdict

For most UK bathrooms, Schlüter Kerdi-Board (mid-range) hits the best balance: reliable waterproofing, straightforward installation, and genuine peace of mind that you won't have seepage in a year.

If you're budget-constrained and your substrate prep is impeccable, JT Solostone works — just accept that the former isn't as robust as dearer options.

For luxury, Wedi Fundo Primo is the system that lasts; it's genuinely over-engineered, but that's the point.