En-suites & cloakrooms

En-Suite and Cloakroom Installation

Adding a shower room to a bedroom or a toilet under the stairs — tell KJ the space and we'll tell you whether it works and what it takes.

What are you planning?

Pick the closest one and KJ starts the conversation already knowing your problem.

The short answer

The feasibility of an en-suite or cloakroom is decided by three things: whether waste can reach an existing soil stack with adequate fall, whether the room can be ventilated, and whether there is space to use the fittings comfortably once they're in. A usable cloakroom needs roughly 0.8m by 1.4m; a workable en-suite with a shower needs around 1.4m by 2.0m. Where gravity drainage isn't possible — a loft conversion, a room away from the stack, a space under the stairs — a macerator or pumped waste unit makes the room viable. Most installations take one to two weeks depending on whether tiling, electrics and building work are involved.

  • Covering Greater Manchester and the wider North West.
  • There is no call-out fee; work is priced before it starts.
  • Free advice from KJ first — photos and video welcome.

Tell us about your project

A minute here means a properly costed quotation instead of a guess. Photos and inspiration images can be attached in the panel below.

Which fixtures do you need?
Walls and flooring
Are fixtures moving position?

Tell KJ what's wrong

Free and no obligation — we'll get a qualified local plumber on it.

Start with KJ
KJ, founder of KJ Plumbers

KJ Plumbing Expert · Online now

KJ, founder of KJ Plumbers

KJ

online

Honest UK plumbing advice — free, and a local plumber when you need one.

KJ, founder of KJ Plumbers

Hi, I'm KJ — honest UK plumbing advice, free, and a local plumber when you need one. Tell me what's happening — leak, blockage, boiler, emergency, anything — and I'll help you sort it.

You can send a photo, short video, voice note or share your location — whatever's easiest. Please avoid sending faces, documents, house numbers or payment cards in photos.

For genuine emergencies call 01706 318200, or the National Gas Emergency Service on 0800 111 999.

Common plumbing problems — tap one to start

Will it actually work in your space?

Three questions decide almost every en-suite and cloakroom project.

Can waste reach a soil stack?

Gravity waste needs consistent fall. Close to an existing stack is straightforward; far from it usually means a macerator or a pumped unit.

Can the room be ventilated?

Building Regulations require mechanical extraction in a room without an openable window. An internal cloakroom needs a duct route planned in, not added later.

Is there room to use it?

Doors need to open, you need to stand up, and a basin you can't reach past isn't a basin. We'll tell you if a layout looks good on paper and won't work in life.

What about the floor?

A shower room upstairs needs the floor checking for deflection before tiling. Tile on a bouncy floor and the grout cracks within a year.

Macerators — an honest view

A macerator turns an impossible position into a workable room, and for loft en-suites and under-stairs toilets it is often the only realistic option. Fitted properly, with the right unit for the fittings connected to it, they run for years.

But they are a mechanical part with a service life and a maintenance requirement, they are audible, and they impose rules about what can go down them. Where a gravity connection is genuinely achievable we will recommend that instead, even though it is usually the more expensive install.

What a typical project involves

  • Survey: measurements, soil stack location, floor construction, water supply and ventilation route.
  • Layout: a plan that fits real fittings with real clearances, not a showroom drawing.
  • First fix: pipework for supply and waste, and any structural or stud work.
  • Electrical work by a qualified electrician: lighting, shaver point, extractor, and any electric shower supply.
  • Waterproofing and tiling in the wet area, then second fix and commissioning.
  • A written scope and fixed price before any of it starts.

What it costs

A downstairs cloakroom with a toilet and basin, straightforward drainage and modest finishes typically lands between £2,500 and £4,500 fitted. An en-suite shower room is usually £4,500 to £9,000 depending on the shower, the tiling and whether a macerator or pump is required.

The variables that move the number most are drainage complexity, the amount of tiling, and the fittings you choose. We put all of that in writing before you commit, and the quote is broken down so you can see what each part costs.

En-suite and cloakroom installation — your questions answered

Not sure yet? Ask KJ first

Describe it in your own words, send a photo or a short video, and get a straight answer on what it is and what it should cost — before you book anything.

Tell KJ what's wrong

Free and no obligation — we'll get a qualified local plumber on it.

Start with KJ
KJ, founder of KJ Plumbers

KJ Plumbing Expert · Online now

KJ, founder of KJ Plumbers

KJ

online

Honest UK plumbing advice — free, and a local plumber when you need one.

KJ, founder of KJ Plumbers

Hi, I'm KJ — honest UK plumbing advice, free, and a local plumber when you need one. Tell me what's happening — leak, blockage, boiler, emergency, anything — and I'll help you sort it.

You can send a photo, short video, voice note or share your location — whatever's easiest. Please avoid sending faces, documents, house numbers or payment cards in photos.

For genuine emergencies call 01706 318200, or the National Gas Emergency Service on 0800 111 999.

Common plumbing problems — tap one to start