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How to Fix a Leaking Tap in Newcastle-under-Lyme

Published August 2026 | Leaking Tap Repair Guide

This guide covers how to diagnose and repair the most common types of leaking tap found in UK homes, from worn rubber washers to failed ceramic disc cartridges. It is written for homeowners in Newcastle-under-Lyme who are comfortable doing basic DIY and want to attempt the repair themselves before picking up the phone to a plumber.

Before You Start - Safety First

The single most important thing to do before you touch any tap fitting is to locate and turn off your stop valve. In most homes in Newcastle-under-Lyme, this sits under the kitchen sink or in a cupboard close to the water meter. Turning it clockwise shuts off the water supply to the whole property. If the valve has seized and will not move, do not attempt the repair - call a plumber instead. A few more safety points to keep in mind before you start:

Never work on a live supply line. Turn the water off and run the tap until the flow stops completely before you open anything up.
Lay an old towel or a shallow tray beneath the tap to catch any residual water sitting in the pipes.
Do not force seized fittings. Old pipework in Staffordshire properties, particularly Victorian and Edwardian terraces, can be heavily corroded. If something is not moving, stop and apply penetrating oil rather than forcing it and risking a burst pipe.
Keep electrical sockets, appliances, and extension leads well away from any pooling water.
If you smell gas near the area you are working in, stop immediately, leave the property, and call the National Gas Emergency Service on 0800 111 999.

What You Will Need

The tools and parts required depend on the type of tap you have. Traditional pillar taps, common in older UK homes, use rubber washers. Modern single-lever or quarter-turn taps use ceramic disc cartridges. Both are fixable at home, but the process differs slightly. Tools:

Adjustable spanner or basin wrench
Flat-head and cross-head screwdrivers
Pliers with rubber-coated or padded jaws (to avoid scratching chrome finishes)
Allen key set
PTFE tape

Materials:

Replacement tap washers - buy a mixed assortment pack, typically 1 to 3 pounds
Ceramic disc cartridge if required - typically 8 to 25 pounds depending on brand and size
Replacement O-rings - a multipack costs around 3 to 5 pounds
Silicone grease - a small tube costs around 3 to 6 pounds
Penetrating oil such as WD-40 for any seized components

Time estimate: Allow 30 to 60 minutes for a washer replacement once the water is off. A cartridge swap on a monobloc or mixer tap can take up to 90 minutes if you are doing it for the first time. You can pick up most of these parts from a plumbers' merchant or DIY retailer in Newcastle-under-Lyme. If you know the tap brand and model number in advance, ordering the cartridge online is often cheaper and means you get an exact match.

Step-by-Step Instructions

Step 1 - Turn Off the Water Supply and Drain the Tap

Turn the stop valve clockwise until it will not move any further. Open the tap fully and leave it until all flow stops. This relieves residual pressure in the pipe and prevents water from spraying out when you open the tap assembly. Put the basin plug in before you start - small screws and washers have a habit of vanishing down drains.

Step 2 - Remove the Tap Handle

Most tap handles have a decorative cover cap on the top, usually marked with H or C, or coloured red and blue. Prise this cap off carefully with a flat-head screwdriver - it is typically just clipped in. Underneath you will find a screw, usually a cross-head or an Allen key fitting. Remove the screw and lift the handle straight off. If it is stuck, do not yank it. A gentle twist whilst pulling upward usually frees it, or a short soak with penetrating oil if it has not been removed in years.

Step 3 - Remove the Headgear or Cartridge

For traditional pillar taps, the headgear is the threaded metal unit that screws into the tap body. Use your adjustable spanner to turn it anticlockwise and lift it out - the rubber washer is seated at the base of this unit. For monobloc mixer taps with ceramic discs, you will typically find the cartridge beneath a retaining nut or a clip once the handle is off. Take a photograph on your phone before removing any component. It takes two seconds and saves a lot of confusion during reassembly.

Step 4 - Replace the Washer or Cartridge

For pillar taps, the rubber washer sits at the bottom of the headgear and is held by a small nut. Undo the nut, remove the old washer, and fit a new one of the same diameter. Apply a thin coat of silicone grease to the new washer before fitting - it helps it seat properly and extends its life. For ceramic cartridge taps, pull the old cartridge out and match it against the replacement before fitting. The brand, diameter, and hot or cold orientation all need to match. Our engineers recommend running a check through the Voltrade GoFIX diagnostic tool before buying parts - it helps confirm whether you are dealing with a washer, cartridge, or O-ring fault based on where and how the tap is leaking, which avoids buying the wrong part.

Step 5 - Inspect and Replace O-Rings Where Needed

If your tap is leaking around the base of the spout rather than from the tip, the cause is almost always a worn O-ring. These rubber rings seal the spout to the tap body and degrade over time. Roll the old O-ring off and measure the internal diameter before buying a replacement - even a fraction of a millimetre difference in sizing will prevent it from sealing. Lightly coat the new O-ring with silicone grease before fitting it. This makes it easier to seat correctly and prevents the rubber from tearing during assembly.

Step 6 - Wrap Threads with PTFE Tape

Before reassembling, wrap two or three turns of PTFE tape clockwise around any threaded connections you have undone. This is a simple step that many DIYers miss, and it is frequently the reason a repair starts dripping again within a few weeks. Wrap in the direction of the thread - if you wrap anticlockwise, the tape will unwind as you tighten the fitting and will not seal.

Step 7 - Reassemble and Test

Refit the headgear or cartridge, then the handle, then the decorative cap. Hand-tighten everything first, then give it a firm quarter-turn with your spanner. Do not over-tighten - applying too much force can crack the tap body on older fittings, turning a minor repair into a much larger job. Turn the stop valve back on slowly, watching for any immediate leaks at the joints. Turn the tap on and off two or three times to test the flow and confirm the drip has stopped. Leave it for 15 minutes and check again before packing your tools away.

What to Do If This Does Not Fix It

If the tap is still dripping after a washer or cartridge replacement, there are a few things worth checking before you call anyone out. First, confirm you have the right size part. Even a small size mismatch will prevent a proper seal. Take the old washer or cartridge to a local plumbers' merchant and match it in person if you are not certain. Second, inspect the tap seat - the metal surface inside the tap body that the washer presses against when closed. If this surface is pitted or corroded, no washer will seal against it properly. A tap reseating tool, typically 15 to 25 pounds from a plumbers' supplier, can grind the seat flat. If the corrosion is too deep, the tap body itself may need replacing. Third, dry everything around the tap base and pipework thoroughly, turn the water back on, and watch carefully for where the water is actually appearing. Loose compression fittings or failing solder joints in the supply pipes can look very similar to a tap leak but require a completely different fix.

When to Stop and Call a Professional

Some repairs are well within the reach of a capable DIYer. Others genuinely need a qualified plumber. Our engineers would say: stop and call someone if any of the following applies.

The stop valve has seized and you cannot isolate the water supply.
You notice green verdigris or significant corrosion on copper pipework or fittings - common in older Staffordshire properties and a sign the pipework needs professional assessment.
The tap body itself is cracked, or the thread is stripped and the headgear will not seat correctly.
You have replaced the washer and cartridge and the leak continues.
The leak is coming from the pipework connections rather than the tap itself.
You are not confident reassembling the tap correctly and do not want to risk a flood.

A qualified plumber in the Newcastle-under-Lyme area will typically charge between 60 and 90 pounds per hour for call-out work. A tap repair including parts commonly comes to between 80 and 160 pounds. If the tap is beyond repair and needs a full replacement, budget around 130 to 300 pounds in total depending on the tap style and how accessible the supply pipework is. Voltrade connects homeowners across Staffordshire with vetted, reviewed local plumbers who can typically attend quickly. If the job has gone beyond what you are comfortable with, booking through the platform is the practical next step.

Questions About This Process

How do I know if my tap uses a washer or a ceramic cartridge?

Traditional pillar taps with separate hot and cold handles, common in older UK homes, almost always use rubber washers. Modern single-lever mixer taps and quarter-turn taps use ceramic disc cartridges. The simplest test is the handle action: if the tap requires more than a quarter-turn to go from fully closed to fully open, it is almost certainly a washer-based tap. If it opens and closes with just a quarter-turn, it uses a ceramic disc. If you are still unsure, the Voltrade GoFIX diagnostic tool can help identify your tap type based on a few quick questions.

Is it safe to leave a dripping tap unfixed for a few weeks?

It is not a good idea. A dripping tap wastes a meaningful volume of water over time and will typically get worse, not better, as the washer or cartridge continues to deteriorate. The longer you leave it, the more likely you are to cause secondary damage to the tap seat, which is a more involved and costly repair. In winter months, a tap that is partially compromised can also make it harder to notice changes in water pressure that might indicate a bigger problem elsewhere in the system. Fix it sooner rather than later.

Can I do this repair without turning off the mains stop valve?

Only if your tap has its own isolation valve on the supply pipe directly underneath it - a small flat-slot valve that you turn 90 degrees with a screwdriver. If one is fitted, you can use that instead of the mains stop. However, if there is no isolation valve present, you must turn off the mains supply before opening the tap assembly. Attempting the repair with live water pressure in the pipe will cause a significant flood the moment the headgear or cartridge is removed. Always check for an isolation valve first, and if you cannot find one, fitting one at the same time as your repair is worth considering.

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Sophie Barker

Covers emergency plumbing, kitchen plumbing, and pipe repairs for homeowners across England and Wales.

Reviewed by Thomas Waite - technical reviewer at voltrade. This article is intended as general guidance and should not replace a professional on-site assessment. All Voltrade engineers are independently qualified, insured, and vetted.