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New and replacement WCs

Toilet installation in London

A straight swap of an old toilet for a new one is a morning’s work, no more complicated than that. Moving a WC to a new spot, fitting a wall-hung pan on a frame, or putting one where there has never been a soil connection before — that is a different job with a different set of questions, and they are worth asking before the suite is bought, not once it has already arrived.

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What we cover

What this includes

  • New and replacement toilets, supplied or your own
  • Close-coupled, back-to-wall and wall-hung pans
  • Concealed cisterns and support frames
  • Moving a toilet to a new position
  • Soil pipe and waste alterations
  • Cloakroom and en-suite WCs
  • Flush mechanism and cistern repairs, no new suite needed
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Before you call

Worth knowing first

A little of this might mean you do not need to call us at all — we would still rather you knew it.

Measure before you buy the suite

The distance from the wall to the centre of the waste, and the height and width of the cistern, decide whether a given toilet fits your existing pipework. Photograph the current one from the side and send it with the model you are considering, and we can tell you before you order.

Wall-hung means a frame and a wall that can take it

A wall-hung pan does not hang off the plasterboard — it hangs off a steel frame that carries the actual weight, hidden behind the wall. Cleaner look, easier to keep clean underneath, but the frame eats up more space behind the wall than most people expect. In a tight London cloakroom, that space is often what decides whether wall-hung is even possible.

Concealed cisterns still need access

Everything behind the panel will need reaching one day — the flush valve and the inlet valve are the parts that fail. An access panel is not optional, and tiling over the whole thing is a decision that gets undone expensively.

A rocking toilet will leak eventually

Movement works the waste seal loose over months, and by the time it shows on the ceiling below it has usually been going a while. If yours moves when you sit down, it is worth dealing with now.

Pricing

What affects the price

Swapping a toilet is one of the smaller plumbing jobs there is, yet quotes for it still differ. Nearly all the difference comes from what happens behind and underneath the pan rather than the toilet you pick.

The style of toilet

A close-coupled toilet on an existing waste is the simplest fit. Back-to-wall pans need a unit or boxing to hide the cistern, and wall-hung pans need a steel frame and a false wall built, boarded and tiled before the pan goes on.

Lining up with the soil pipe

If the new pan’s outlet meets the existing soil pipe at the same height and position, a standard connector does it. Different heights, an offset, or an old cement joint into cast iron that has to be cut out carefully all add parts and time.

The floor under the old one

An old toilet that has leaked for years often leaves soft or rotten boards underneath, and they need replacing before a new pan is screwed down. A new toilet with a smaller footprint can also leave an untiled outline where the old one stood.

Where the water supply comes in

Older cisterns are usually fed from the side. Many new ones take the supply from underneath or from behind, so the pipe and isolating valve have to be moved to suit. It is a small change, but worth knowing about when choosing a model.

The price is agreed before any work starts. We take card and cash.

Questions

Common questions

Can you fit a toilet I have already bought?

Yes — Ninja Plumbers fits customer-supplied toilets all the time. Send over the model before the visit so we can check the waste position matches and confirm whether any adaptors will be needed.

How long does a straight swap take?

A like-for-like replacement is usually a morning. Anything involving moving the waste, a concealed cistern or a wall-hung frame is longer and gets quoted after a look.

Can you move the toilet across the room?

Sometimes. It depends on getting a fall on the waste run to the soil stack. Where that is not possible the alternative is a macerator, which we will explain honestly rather than default to.

Do you take the old one away?

Yes, that is included. Old ceramics go for recycling rather than into a skip where we can.

Can a toilet go under the stairs or in a cupboard?

Often, yes, and in a London terrace the space under the stairs is a popular spot for a cloakroom WC. What decides it is whether a waste can reach the soil pipe or drain with enough fall, whether there is headroom to use it comfortably, and ventilation — a WC without a window needs an extractor fan. Where a gravity waste is not possible, a macerator is the fallback, with its own trade-offs.

Can you fit a shower toilet with a built-in bidet wash?

Yes, but check the room before buying one. Most shower toilets need a fused electrical supply close to the pan, which our electricians can fit, as well as a water feed and the usual waste. Some are wall-hung and need a frame, and the seat unit adds depth, which matters in a narrow cloakroom. Send us the model and a photo of the space and we will say whether it will work.

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Need toilet installation in London?

Describe the problem and give us your area, and we’ll tell you the price before anyone starts work.

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