How To Fix A Leaking Mixer Tap Bathroom

How to Fix a Leaking Mixer Tap in the Bathroom

A leaking bathroom mixer tap can be a source of frustration and wasted water. Fortunately, many common leaks can be fixed with basic tools and some know-how. This guide will provide straightforward instructions on how to identify the source of the leak and repair it, helping you save water and money in the long run.

Identifying the Source of the Leak

Before attempting any repairs, it's crucial to determine the source of the leak. There are a few common locations to check:

1. Cartridge

The cartridge is the heart of the mixer tap, controlling hot and cold water flow. A worn or damaged cartridge can cause leaks at the spout or around the handle. If you notice a consistent drip or a slight leak when the tap is turned off, the cartridge may be the culprit.

2. O-Rings

O-rings are small rubber seals that prevent water from escaping from the tap. Over time, these rings can wear down, crack, or become brittle. This can cause leaks at the spout, handles, or base of the tap.

3. Washer

The washer is a small, rubber disc located inside the tap that seals against the tap stem to prevent water from flowing when the tap is closed. If the washer becomes worn, cracked, or damaged, it will allow water to leak past it.

4. Tap Body

Leaks originating from the tap body itself are less common but can occur if the tap is old, damaged, or corroded. This type of leak will often result in a steady drip, even when the tap is completely closed.

Tools and Materials

Before you begin any repair, gather the following tools and materials:

Adjustable wrench
Screwdriver (flathead and Phillips)
Pliers
Replacement cartridge (if needed)
Replacement O-rings (if needed)
Replacement washer (if needed)
Teflon tape
Grease (for tap components)
Bucket or towel

Repairing a Leaking Mixer Tap Cartridge

If you suspect a worn or damaged cartridge is causing the leak, follow these steps to replace it:

Turn off the water supply to the tap. Locate the shut-off valves under the sink or behind the wall and turn them clockwise to shut off the water flow.
Open the tap to drain any remaining water in the pipes. This will prevent water from spilling out when you remove the cartridge.
Remove the handle. Most mixer taps use a screw or a small cap to secure the handle. Locate the screw and turn it counter-clockwise to release the handle.
Remove the decorative cover if necessary. Some mixer taps have a decorative cover that must be removed before accessing the cartridge. This cover may be held in place by clips or screws.
Loosen the cartridge nut. The cartridge nut is usually located under the decorative cover and holds the cartridge in place. Use an adjustable wrench to loosen the nut, turning it counter-clockwise.
Remove the old cartridge. Once the nut is loose, pull the old cartridge out of the tap body. Be careful not to damage the seals or other parts of the tap.
Install the new cartridge. Align the new cartridge with the tap body and gently push it into place. Be sure the cartridge sits flush with the tap body and the seals are properly installed.
Tighten the cartridge nut. Use the adjustable wrench to tighten the nut, turning it clockwise. Be careful not to overtighten, as this can damage the cartridge or the tap body.
Reassemble the tap. Replace the decorative cover, handle, and any other removed parts. Be sure to tighten all screws and bolts securely.
Turn the water supply back on. Slowly open the shut-off valves to allow water to flow into the tap again.
Test the tap for leaks. Turn the tap on and off several times to ensure that it operates smoothly and without any leaks.

Repairing a Leaking Mixer Tap with O-Rings

If the leak is coming from the spout or handles, worn O-rings might be the issue. Replace these using the following steps:

Turn off the water supply to the tap. Locate the shut-off valves and turn them clockwise to shut off the water flow.
Remove the handle and decorative cover (if applicable) as described in the cartridge replacement steps.
Identify the O-rings. These are typically located around the spout or handles. Carefully remove the old O-rings, noting their size and shape for future reference.
Install new O-rings. Apply a small amount of grease to the new O-rings and carefully install them in the corresponding grooves. Ensuring a tight seal.
Reassemble the tap. Replace the decorative cover and handle, tightening screws and bolts securely.
Turn the water supply back on. Slowly open the shut-off valves and test the tap for leaks.

Repairing a Leaking Mixer Tap with a Washer

If the leak is coming from the tap stem, a worn washer might be the culprit. Replacing the washer is similar to replacing the cartridge, so follow the steps for cartridge replacement up to the point of removing the old cartridge. Once the cartridge is removed:

Remove the washer. The washer is usually located on the end of the tap stem inside the cartridge housing. Carefully remove it, noting its size and shape.
Install the new washer. Place the new washer onto the end of the tap stem. Ensure it sits flat and securely.
Reassemble the tap. Reinstall the cartridge and tighten the cartridge nut. Replace the decorative cover, handle, and other components.
Turn the water supply back on. Slowly open the shut-off valves and test the tap for leaks.

If you are unable to fix the leak yourself or diagnose the problem, a professional plumber can help. They have the expertise and specialized tools to deal with more complicated leaks and can provide a lasting solution.