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C Gill & Son heating engineers working in a home

Bathroom planning

Wet Room Installation

A wet room brings the shower area into the bathroom floor rather than containing it inside a raised tray. That can create a more open room, but the hidden construction matters just as much as the fittings. Start with the floor, drainage and water supply before deciding where the shower should go.

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What makes a bathroom a wet room

The shower floor is built with a fall towards a drain, and the surrounding construction is waterproofed beneath the visible finish. Tiles and grout alone are not the waterproof layer. The floor and wall junctions, pipe penetrations and drain connection need to form a joined-up system suitable for the room.

A screen may still be useful to limit spray around a toilet, basin or doorway. An open shower does not mean every surface should be routinely soaked. Compare the floor-level approach with a tray-based enclosure on our walk-in shower installation page. Both can offer a spacious shower, but their floor build-ups and drainage arrangements differ.

Check the floor before choosing the finish

On a timber floor, the position and condition of joists affect where a drain can sit and how a waste pipe can reach the existing drainage. The floor must be stable enough for the specified waterproofing and finish. Structural changes should be assessed rather than made simply to fit a product already purchased.

A solid floor presents different questions: available depth, the waste route and any existing services beneath it. A level entrance is not possible in every room without altering surrounding floors. Measurements taken during planning help establish whether the proposed detail can work, and whether access, a small threshold or a different shower arrangement needs discussing.

Drainage and shower output must agree

The drain needs to handle the intended shower flow, while the waste pipe needs an appropriate route and fall. A high-output shower chosen independently of the drainage can leave water standing on the floor. Access for cleaning the trap also matters, because hair and soap will need removing during ordinary use.

The available hot and cold supply shapes the choice of shower valve. A cylinder arrangement and a combi boiler do not necessarily deliver the same performance, especially when other taps are running. Our bathroom installations page explains the wider plumbing decisions. Check product compatibility before ordering, including the shower fittings, drain and floor system rather than treating each as a separate purchase.

Plan waterproofing and the surrounding trades

A wet-room project can involve plumbing, floor preparation, waterproofing, tiling and electrical work. Agree responsibility for each stage before the room is opened up. The installation sequence should follow the chosen system instructions, including preparation, curing and any required checks before the finish covers the waterproof layer.

Ventilation and heating need considering too: an open shower still produces moisture, and the room needs a suitable way of removing it. Bathroom electrical work requires appropriate assessment by a competent electrician. No particular electrical registration or specialist wet-room accreditation is implied here. When discussing the project, ask who will carry out each part and what is included in the proposed scope.

Everyday access, cleaning and disruption

Think about the person using the shower, not only how the empty room looks. The entrance, screen position, controls and space to turn should be considered together. Floor-level access can be helpful, but suitability for a particular mobility need must be checked rather than assumed. The finished floor should be selected for wet use and cleaned in accordance with its instructions.

Ask how access to essential bathroom facilities will be managed while work is underway. Existing pipework may only become fully visible when finishes are removed, so discuss how unexpected findings will be agreed. Keep records of the waterproofing system and product details; those are useful if maintenance or alterations are needed later.

Discuss a wet room before ordering

C Gill & Son is based in Briton Ferry, Neath. To discuss wet room installation, send room dimensions, photographs of the present bathroom and an outline of the layout you have in mind through the quote form. Chris can confirm the proposed scope and any other trades required after the room is assessed.

This page describes wet-room construction generally, not a claim about completed projects. A conversation about the actual floor and drainage is the next step, whether you are changing an existing bathroom or planning a shower in a newly arranged room.

Common questions

Wet Room Installation FAQs

Clear answers before you arrange a visit.

Is a wet room always completely open?+

No. A glass screen can help contain spray without forming a full enclosure. Its position should allow comfortable access while protecting fittings and the doorway from routine splashing.

Can a timber bathroom floor become a wet room?+

It may be possible, but joists, floor stability, drain depth and waste routing must be assessed. The floor and waterproofing need to be designed together; tiles alone do not make timber construction watertight.

Should I choose the wet-room tiles first?+

Choose the overall system and floor requirements before committing to finishes. The drain, waterproofing, floor build-up and tile suitability need to work together, alongside the intended shower output.

What should I send when asking about a wet room?+

Send photographs, approximate dimensions and the position of the current shower, toilet and drainage. Explain any access requirements and whether this is your only bathroom so the proposed work can be discussed realistically.

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