A leaky faucet can lead to excessive water consumption and, in the long term, damage to your installation. Rather than replacing the entire faucet, it is often possible to repair the leak by identifying the defective part and replacing it.

1. Understanding the causes of a leaky faucet

A leaky faucet can have different origins:

• A worn seal that no longer performs its sealing function.
• A defective cartridge in the case of a mixing valve.
• A scaled or damaged valve seat, preventing the water from shutting off completely.
• A loose fitting or damaged hose under the sink.

Correctly identifying the cause can avoid unnecessary replacement of the entire valve.

2. Replace seal or cartridge

For a classic mixer valve

If water continues to flow despite complete closure, the seal under the valve is probably to blame.

1. Turn off the water supply and open the tap to drain off any remaining water.
2. Remove the valve head with a wrench.
3. Remove the worn seal and replace it with a new one of the same diameter.
4. If necessary, clean the valve seat with fine abrasive paper.
5. Reassemble and test for leaks.

For a mixing valve

These mixers have a ceramic cartridge that regulates the flow of water, rather than a conventional seal.

1. Remove the handle from the mixer after removing the fixing screw.
2. Unscrew the retaining nut to gain access to the cartridge.
3. Replace the cartridge with a new one, taking care to position it correctly.
4. Reassemble and test the installation.

3. Repairing a leak under the tap

If water is leaking from the base of the faucet or under the sink, there are several things to check:

• A worn O-ring: remove the spout from the faucet and replace the O-rings with new ones.
• A loose connection: tighten hose nuts with an open-end wrench, but do not overtighten.
• Damaged hose: if a hose is cracked or damaged, replace it to prevent further leakage.

Trust Leader Services

If, despite these repairs, the leak persists, it’s best to call in a professional. Leader Services can identify and repair your faucet quickly and efficiently.

• Find out more about our plumbing services: Leader Services – Plumbing
• Need an intervention? Contact us here: Leader Services – Contact

Conclusion

A leaky faucet can often be repaired without having to replace it entirely. By changing a seal, a cartridge or a hose, you can stop the leak and avoid unnecessary waste. If the repair seems complex or the leak persists, calling in an expert guarantees a quick and lasting solution.