A shower that swings from hot to cold, dribbles instead of sprays or keeps dripping long after it is turned off wears thin fast. A shower that leaks into the wall is worse, because nobody knows until the paint bubbles, the skirting swells or the carpet in the next room goes damp.
We repair showers across Christchurch, Selwyn and Waimakariri: mixers and valves, heads and rails, pressure problems and hidden leaks. We work out whether the fault is in the mixer, the hot water system or the pipework, and fix it without lifting more tiles than we have to.
Pricing: quotes are free, and every job gets a fixed price before we start, so there are no surprises on the invoice.

Shower Repairs Jobs We Handle Across Christchurch
- Shower repair
- Leaking shower head
- Shower mixer replacement
- Leaking shower tray
- Temperature swings
- Rain shower upgrades
Shower problems we fix
Typical faults include:
- The head drips after the mixer is off
- Temperature jumps when someone flushes a toilet or runs a tap
- Weak or uneven spray from the head
- A mixer handle that is stiff, loose or leaking at the wall
- Water on the floor outside the shower or in the next room
- Water that is too hot, or never hot enough
- Broken rails, hoses and diverters
Temperature swings and scald risk
When the shower goes suddenly hot or cold as someone uses water elsewhere, the mixer is not coping with a pressure change on one side. Older homes with low pressure hot water from a header tank and mains pressure cold make this worse. The fix might be a new cartridge, a mixer suited to your system, or balancing the pressures.
Scald protection comes from the tempering valve, which limits the temperature at bathroom fixtures. Under G12/AS1, new plumbing to showers, basins and baths in most homes must be limited to 50 degrees C, a change made in 2023 to reduce scalding. If your shower runs scalding hot, the tempering valve may have failed or never been fitted, and we check it on every job.
How It Works
Leaks and low pressure
A head that drips is usually a worn cartridge or washer in the mixer. Water outside the shower can be a failed seal around the screen, cracked grout, a leaking waste, or a pipe or mixer body leaking inside the wall. We use leak detection to narrow it down before opening anything. A dripping head also adds to household water use, which matters in Christchurch where use above the council's daily allowance is charged.
Weak pressure has several causes: a clogged head or flow restrictor, a valve partly closed or failing, a low pressure hot water system, old galvanised pipe narrowed inside, or a mixer not designed for your pressure. Sometimes a clean fixes it. Sometimes the answer is a mains pressure upgrade.
Cost
Heads and cartridges are at the lower end. Replacing a mixer in a tiled wall, chasing a hidden leak or repiping costs more, and you get the price before we start. If the shower is beyond saving, we quote a new shower installation instead.
Showers in Christchurch homes
Many older Christchurch bungalows, in suburbs like St Albans and Beckenham, still run low pressure hot water from a header tank in the roof space. That limits what any shower can do, and in a hard frost the header tank and pipes in an unheated roof space are exposed. Master Plumbers advises lagging pipes in roof spaces and under floors, and we can do that while we are there.
Tens of thousands of Christchurch homes were repaired after the 2010 and 2011 earthquakes, and many bathrooms were rebuilt as part of that work. Those showers are now well over a decade old, so seals, grout and silicone are due a check even when nothing looks wrong. On hill suburbs such as Cashmere, homes are fed from council reservoirs for steady pressure, so if a shower there is weak, the pipes and fittings inside the property are the first place to look.
Why Choose Cheeky's Plumbers for Shower Repairs
Leak found before tiles come off
We test the mixer, waste, seals and pipework to pin down a leak before opening a tiled wall, so only the tiles that have to come off do.
Scald check on every job
We check the tempering valve and delivered temperature against the 50 degrees C limit for bathroom fixtures under G12/AS1.
Thermostatic mixer options
If temperature swings are the problem, we can fit a thermostatic or pressure-balancing mixer that holds temperature when a toilet is flushed.
Matched to your hot water
We choose cartridges and mixers that suit your system, whether that is low pressure from a header tank or mains pressure.
Upfront price
The price is agreed before we start.
Shower Repairs FAQs
Why does my shower go hot and cold?
Usually the mixer cannot cope with pressure changes when other taps or toilets are used. A new cartridge, a better-suited mixer or a thermostatic mixer often fixes it.
How much does a shower repair cost in Christchurch?
Replacing a mixer in a tiled wall or chasing a hidden leak costs more and is priced before we start.
Why is my shower pressure so low?
Common causes are a clogged head, a low pressure hot water system, old corroded pipe or an unsuitable mixer. We test to find which.
How hot should my shower water be?
For new plumbing in most homes, G12/AS1 limits hot water at showers to 50 degrees C. If yours is much hotter, have the tempering valve checked.
Can you replace a shower mixer without removing tiles?
Often, if the new mixer suits the existing body or a cover plate hides the old holes. We check before we start.
Is my shower leaking into the wall?
Signs include bubbling paint, swollen skirting, musty smells or stains in the next room. We test the mixer, pipework and waste to find the source.
Shower Repairs Across Christchurch
Our shower repairs team works in every Christchurch suburb. Find your local plumbers:
Related Services
Toilet Repairs
Running toilets, leaking cisterns, blocked pans and wobbly bases fixed fast.
View serviceTap & Mixer Repairs
Dripping taps, stiff mixers and leaking spouts repaired or replaced.
View serviceBathroom Renovation Plumbing
Plumbing for bathroom renovations, from moving a toilet to a full strip-out with tiled showers and wall-hung vanities.
View serviceKitchen Plumbing
Sinks, dishwashers, fridge water lines, filtered taps and instant boiling water taps installed and repaired.
View serviceBlocked Drains
Blocked sinks, showers, toilets and gully traps cleared fast.
View serviceHot Water Cylinders
Hot water cylinder replacement across Christchurch.
View serviceSources and further reading
- Building Performance: temperature limited water heater consultation outcome
- Master Plumbers: avoid frozen pipes this winter
- Christchurch City Council: where our water comes from
- Christchurch City Council Newsline: excess water, your questions answered
- Natural Hazards Commission: Canterbury Home Repair Programme
