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Repairs

Shower repair in London

Showers tend to fail slowly. The temperature starts wandering, or the flow drops off a little each year, and it is easy to put up with for a long time before doing anything about it. Most of these faults turn out to be one part rather than a whole shower — a cartridge, a scaled-up head, a perished seal — and Ninja Plumbers would rather change the part than sell you a replacement you did not need.

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  • Price agreed before work starts
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What we cover

What this includes

  • No hot water at the shower when the rest of the house is fine
  • Weak flow and pressure that has faded over time
  • Temperature swinging when a tap is run elsewhere
  • Leaking and dripping shower valves
  • Dripping heads, perished hoses and worn seals
  • Leaking trays, wastes and sealed edges
  • Water showing on the ceiling of the room below
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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.

Hot everywhere else, cold at the shower

If the taps around the house run hot and only the shower does not, the fault is at the shower rather than at the boiler. On a thermostatic valve it is usually the cartridge — the part inside that does the blending — which either seizes up with limescale or fails closed on the hot side, which is how it is designed to fail. The other common cause costs nothing to put right: an isolating valve behind the panel that has been knocked shut at some point.

Pressure that has faded rather than failed

A shower that has slowly got weaker over the years in London is very often limescale rather than anything mechanical. Hard water furs up the holes in the head, the flexible hose and the internals of the valve, and it happens gradually enough that nobody notices until it is bad. Where descaling makes no difference, the restriction is further back: a part-closed isolating valve, a scaled cartridge, or a supply that never delivered much to begin with. On a gravity-fed system with a tank in the loft, boosting it is a separate job covered on the shower pumps page, and where the mains itself is poor, our low water pressure page is the better read.

Temperature that jumps when someone runs a tap

On a plain mixer shower that is normal behaviour, not a fault, and the cure is a thermostatic valve rather than a repair. On a shower that already is thermostatic it is a genuine fault: the cartridge has stopped regulating, usually because of scale. That is worth dealing with rather than living with, because the same failure that lets it run cold can let it run hot.

A leak that shows up downstairs

A stain spreading across the ceiling below a bathroom has three usual sources: the shower waste or trap, the seal where the tray or bath meets the tiles, or the valve itself leaking behind the wall. They need telling apart before anything is opened up, because the repair and the mess involved are different in each case. In a converted flat where the ceiling belongs to a neighbour, that is worth reporting early rather than once it has spread across their room.

Pricing

What affects the price

Many shower faults are a single part, fitted in a single visit, and priced accordingly. The cost rises when the part is hard to get, or when the fault sits behind tiles that have to come off to reach it.

Which part has failed

A shower head or hose is a simple swap. A thermostatic cartridge or a diverter costs more but is still a straightforward repair. A cracked valve body, or a leak on the pipe joints behind the valve, is a much bigger job.

Whether parts are still made

Branded valves from the main manufacturers usually have parts available for years. Unbranded valves bought online, or discontinued models, may have no cartridge that fits at all, and then a new valve is the only sensible repair.

Getting to the valve

On a surface-mounted valve, everything is reachable from the front. On a concealed valve, the cartridge usually comes out through the faceplate, but a leaking connection behind it means removing tiles, and replacing tiles to match is part of the cost.

Resealing or replacing the tray

A failed silicone seal is a small job, though the area has to be properly dry before it is redone. A cracked or sagging tray has to be replaced, which is bigger. You get the price for whichever it is before anything is taken apart.

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

Questions

Common questions

Is it worth repairing, or should I replace the shower?

It depends what has failed and whether parts are still made for it. A cartridge, a head or a hose is a repair every time. An obsolete valve with nothing available for it is a replacement. We will tell you which one you have rather than defaulting to the bigger job.

My shower runs hot then cold when the kitchen tap is used.

On a plain mixer shower, that is how it works and a thermostatic valve is the fix. On a thermostatic shower it is a fault, and it is normally the cartridge scaled up and no longer regulating.

There is water on the ceiling under the bathroom. Is it definitely the shower?

Not necessarily. It could be the shower waste, the seal around the tray, or a pipe with nothing to do with the shower at all. Stop using the shower while you wait for us — if the stain carries on growing anyway, something else is leaking, and that points at leak detection rather than a shower repair.

Can you get parts for an old shower?

Often, yes, including for units well out of production. Send a photo of the valve and any model number on it and we can usually tell you before the visit whether the part still exists.

Why does my shower keep dripping after I turn it off?

A few drips for a minute or so is normal, as the water left in the head and hose drains out. A drip that carries on for hours, or a steady trickle, means the valve is not shutting off fully — usually a worn cartridge or washer, and often made worse by limescale. It is worth fixing, because a constant drip wastes water and leaves scale stains on the tray.

Is it safe to keep using the shower until it is repaired?

It depends on the fault. A weak flow or a slow drip is an inconvenience, not a danger. A thermostatic shower that has started running unexpectedly hot is different: stop using it, especially if children or older people live with you, because a failing cartridge can let the temperature spike. If in doubt, describe what it is doing when you call and we will tell you honestly whether it can wait.

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Need shower repair 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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