The Cost of Wet Room Installation

All you need to know about the installation of a wet room, including the installation, costs, equipment, labour and time frames.

The Cost of Wet Room Installation

What the job entails

A wet room is currently one of the most sought-after types of bathroom in the UK and is both a popular option in premium new build properties and a common home improvement project on older properties. Wet rooms are usually designed with a level shower and a drain built into the floor in a contemporary, minimalist design. Previously having a wet room was really expensive as it was a pretty complex and labour intensive process, but today wet room installation kits mean a wet room can be created in just a few days, rather than weeks. Wet rooms are also no longer limited to ground floors, new flooring technologies allow you to put a wet room anywhere in the home, even in a loft. The actual cost of a wet room installation will vary depending on the fittings and the existing floor, but a cost of between £5,000 and £10,000 is typical.

Having a conventional bathroom converted into a wet room entails removing the bath and any shower enclosure and tray, then creating an open room with a shower using a simple curtain divide. Wet rooms are ideal for those with mobility issues and the elderly for practical reasons, but at the same time, popular in general for aesthetic reasons. The biggest advantage of wet rooms is accessibility, for anyone who has trouble getting in and out of the bath or shower, wet rooms are liberating as it's just a case of walking in and out. In addition, wet rooms are incredibly easy to clean as they are essentially just open space which can be quickly wiped with your bathroom cleaning product of choice. Cleaning a wet room takes only a fraction of the time it would take to clean a conventional bathroom. Wet rooms can be extraordinarily elegant and at the same time make the most of every inch of available space.

On the downside, with no shower enclosure, the whole room will get rather damp in use and it can be hard to keep towels and toilet paper dry without appropriate storage. Also, to fit a drain in the floor the floor itself has to be on a slight slope, this can be difficult in terms of installation and also makes it difficult to integrate any free standing furniture. Although, the biggest drawback has to be no more soaking in the bath!

Installing a wet room requires a lot of time, patience, and a good level of DIY skill along with all the right materials. Some experienced DIY enthusiasts can take on the job of installing a new wet room, whilst most others will hand over this project to the professionals. There are many reasons why taking on the job of fitting a wetroom could be a good idea, the main one, of course, being to save money.

If you do decide to tackle this home improvement project yourself, then the first thing you need to understand about a wet room, is that it is only as waterproof as the surface used to line it. This surface, which could be tiles or some sort of membrane, will not remain waterproof if the floor and walls are not completely sound. So the first step is to ensure that all surfaces are not loose or flaky and entirely free of dust, debris or grease. Although tiles themselves will give you a waterproof surface if laid properly, there is simply too much water in a wet room to depend on tile grout to take care of waterproofing. In a wet room or shower room, the floor is the most vulnerable area so your wet room floor has to be properly prepared and treated.

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The Cost of Wet Room Installation

The majority of the cost of a wet room installation will be for the materials required, this includes all tiling, shower fittings, sealants & any other products used to create the eventual wet room. The costs can vary based on the size of the room, the tiling and other customisations chosen, the types of products required, the plumbing circumstances of the room and any chosen additional features that require additional materials (such as; underfloor heating, shower screens, etc).

The time spent by the tradesperson on this work will usually be a few days to completion, which will likely cost several hundred pounds. The cost may also vary depending on the features included which may vary in difficulties or time required for installation. For example, a basic wet room and bathroom tiling would cost around £5000, whereas the addition of underfloor heating and shower screens can cost around £7000. Additionally, the cost may correspond to the quality of the work in some cases.

Below are some estimated costs of wet room installation.

Job Description Avg. Cost Duration
Average Wet Room with Tiles £5000 3-4 Days
Average Wet Room with Tiles, Underfloor Heating and New Shower and Screen £7000 4-5 Days

Cost Breakdown

The typical costs of a basic wet room installation with tiling - Total Cost: £5000






Waste Removal


A wet room is a room that has been completely waterproofed throughout. This usually entails the entire floor and shower walls being tanked to offer a watertight finish. A wet area is usually just the area around the shower being waterproofed.
No - you don't need to have a glass screen, but you can section off the shower if you prefer.
You don't need to have underfloor heating, but it does offer a warm underfoot surface which can be regulated independently from the house central heating system. Plus, underfloor heating really fits in well with the minimalist theme of most wet rooms.
There are no predetermined sizes for wet rooms, so no room is too small, in theory. In practice, very small rooms may not work out too well. It is best to speak to a professional for some design advice beforehand.
The drains are vital to a good wet room and you need to take care to fit the type of drain that is approved for use with your system. DIY wet room kits will usually come complete with the drainage, but if you have concrete floors this will be difficult and is best to call professionals.
Wet rooms are basically just like one big conventional shower tray. So all you need to do is give them a good wipe and use a good bathroom cleaner now and again to prevent any mould or mildew. The most important thing is not to pierce the waterproof membrane by screwing into the tiles or walls to fit bathroom furniture!
Yes - there are wet room systems which are approved for wooden floor construction in upper storeys which use flexible latex waterproof membranes.