Drains and toilets · Naples and Campania
Toilet cistern repair in Naples: flush that will not stop or leaks
A flush that keeps running seems a small problem, but it makes the meter turn day and night. We repair exposed and built-in toilet cisterns in Naples and across Campania, and often the fault is fixed on a video call: you do the work, we guide you.
From €100 + VAT about 1 hourFloat, button or flush mechanism
Recognise the problem
- The flush does not stop and water keeps running into the bowl
- You hear the cistern refilling by itself every so often, even at night
- A thin trickle of water always runs down the back of the bowl
- The cistern does not fill, or takes a very long time
- The button stays down or has to be pressed twice
The most common causes
- 1
Worn flush seal
At the bottom of the cistern a rubber seal closes the outlet. With limescale it hardens or warps and lets a thread of water through: the cistern empties slowly and fills up again.
- 2
Fill valve that does not close
The fill valve is the tap inside the cistern, controlled by the float: when the water rises, the float lifts and shuts it. If it is dirty with limescale or the float is set too high, water keeps arriving and escapes through the overflow.
- 3
Stuck float
The float can jam against the wall of the cistern or against another part of the mechanism and no longer rise.
- 4
Button and linkages
The button operates the flush through rods or cables. If a link is too short or a rod is broken, the flush stays open or does not open fully.
- 5
Dirty inlet filter
If the cistern fills slowly, there is often sand or limescale in the small filter at the entrance of the fill valve.
What you can safely check yourself
- Close the cistern's isolation valve: on exposed cisterns it is on the wall, where the pipe enters the cistern. On built-in ones it is usually behind the plate and turned with a flat screwdriver.
- To open a built-in cistern, remove the button plate: on many models it unclips by pushing it upwards or levering gently from below. Do not force it: if it will not come, show it to us on video.
- Look at the water level: if it reaches the top of the overflow, the vertical tube in the middle or at the side, and runs into it, the problem is the fill valve or the float.
- If the level is below the overflow but water still runs into the bowl, put a few drops of food colouring in the cistern and do not flush: if after half an hour the bowl is coloured, the flush seal leaks.
- If the float touches the walls, free it by hand or adjust the rod: often a screw or a clip is enough to lower the shut-off level.
Never open the boiler or the gas water heater, and always switch off the power before touching an electrical appliance. If in doubt, call us.
When you need a technician at home
- The flush mechanism or fill valve of a built-in cistern must be replaced
- The original spare part cannot be found and a compatible one has to be adapted
- An exposed cistern leaks from the bottom or from the pipe connecting it to the bowl
- The cistern is inside the wall and there is damp around the plate or in the flat below
How much it costs
Toilet cistern and float (our price)
Float, button or flush mechanism
from €100 + VAT
Toilet cistern repair
Indicative market price in the Naples area: a seal costs much less than a complete built-in mechanism
50-250 €
Market figures are indicative for the Naples area. You know our exact price before we start; prices apply near our base in Parete, and further away you see them in full when you choose your town.
Flush that will not stop: the two causes
When water runs constantly into the bowl, there are two roads. Either the cistern fills too much and the excess goes out through the overflow, and then the problem is the filling; or the cistern empties from below because the seal does not close, and then it is the flush.
It is easy to tell them apart by looking at the level. If water reaches the top of the overflow, the float must be lowered or the fill valve cleaned. If the level is lower and the bowl takes on the colouring, the seal or the whole flush bell must be changed, the part that lifts when you press the button.
These are screwdriver jobs, with the water off. You find the spare part by taking the old one to the shop, or with brand and model: on a video call we help you choose the right one.
Built-in toilet cistern, Geberit included
In built-in cisterns the whole mechanism sits behind the plate, in a narrow opening. You work by drawing the parts out from there, without breaking the wall: the fill valve and the flush bell are designed to come out through that opening.
Geberit is one of the most widespread brands of built-in cisterns and we work on these too (we are not an official service centre for the brand). Before buying spare parts you need to know the model, which is often shown on a label inside the compartment, visible once the plate is removed.
If there is damp around the plate or a stain in the flat below, the cistern may be leaking inside the wall. In that case do not wait: close the isolation valve and call.
Want to know what it is first? Show us
On a video call we have you open the cistern or remove the button plate and look together at the float, the fill valve and the flush seal. We tell you which part to change and how to adjust it. If the spare part depends on the model, we help you recognise it.
Video consultation, up to 15 minutes: €9.90 (€14.90 on Sundays), deducted from the bill if we then come to your home.
Book the consultationDIY guides
Frequently asked questions
The toilet cistern leaks without flushing: why?
Almost always the flush seal does not close well, or the fill valve does not stop and sends water into the overflow. Looking at the water level in the cistern tells you which of the two.
How do I adjust the toilet float?
It depends on the model: with arm floats you adjust the rod, with vertical ones there is a screw or a clip that makes them slide. The water must stop below the top of the overflow; many models have a mark showing the right level.
Can a built-in cistern be repaired without breaking the wall?
Yes, in the great majority of cases. The internal mechanisms are removed and replaced through the plate opening. The wall is opened only if the cistern itself is cracked or leaks from a fitting set into the wall.
How much does it cost to repair a toilet cistern in Naples?
On the market in the area it runs from about 50 to 250 €, from a simple seal to the complete mechanism of a built-in cistern. Many times, with the 9.90 € video call, you change the part yourself.
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Drains and toilets all over Campania
We work in Naples, Posillipo, Caserta and all over the region. Near our base in Parete there is no travel cost; further away you see the full price before you confirm.
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