Leaking Tap Repair in Truro - What Most People Get Wrong

Published September 2026 | Leaking Tap Repair

Most homeowners think a dripping tap is a harmless irritation - something to sort out when there's nothing better on. That's one of the more expensive assumptions you can make about your home. A leaking tap wastes thousands of litres of water a year, quietly inflates your bills, and can signal a deeper fault that won't resolve itself just because you've turned the volume down on the bathroom radio.

Myth: A Dripping Tap Is Just a Minor Nuisance

The reality

A constantly dripping tap can waste thousands of litres of water every year - and for metered households in Truro and across Cornwall, that waste shows up directly on your bill. South West Water serves much of the region, and householders on a meter pay for every litre they use, including the ones dripping into the plughole at 2am while everyone's asleep.

The financial impact is only part of it. Persistent moisture around a tap fitting corrodes the chrome, stains ceramic sinks, and - in kitchen taps especially - can cause water to track silently along pipework into the cabinet below. Our engineers regularly visit properties in Truro where a slow drip has been ignored for months, only to find corroded valve bodies, water-damaged cabinetry, or failed flexible connectors that could have been caught early for a fraction of the eventual repair cost.

A drip is a symptom. Symptoms don't go away on their own - they develop. The sooner a leaking tap is properly diagnosed, the simpler and cheaper the fix tends to be.

Myth: Replacing the Washer Will Fix Any Leaking Tap

The reality

This is the most persistent piece of plumbing folklore in the UK, and it's not entirely wrong - but it's applied far too broadly. In traditional compression taps, the kind with separate hot and cold handles that require several turns to fully close, a worn washer is often the cause of a dripping spout. Fitting a replacement washer is quick, cheap, and effective when that's genuinely the problem.

The complication is that most taps fitted in UK homes over the past 20 to 30 years aren't compression taps. Monobloc mixer taps, quarter-turn lever taps, and many wall-mounted designs use ceramic disc cartridges instead of rubber washers. If you dismantle one of these expecting to find a worn washer, you won't find one. Attempting to adapt a washer fix to a ceramic disc mechanism typically results in a damaged cartridge housing or a tap that won't reassemble correctly.

There's another issue even with traditional taps. The valve seat - the metal surface the washer presses against to form a seal - wears over time. A pitted or scored valve seat won't seal properly even with a brand new washer sitting against it. You'll get a temporary improvement, then the drip returns within weeks. Proper repair means either re-grinding the valve seat using a seat grinder, or replacing the tap. Our engineers use the Voltrade GoFIX diagnostic process to identify which component is actually failing before dismantling anything - that's what prevents repeat callouts for the same problem.

Myth: Fixing a Leaking Tap Is Always a DIY Job

The reality

Some tap repairs are well within reach for a competent home improver. Changing a washer on a traditional pillar tap, for example, is a reasonable weekend task if you can isolate the water supply and have appropriate tools to hand. The problem is that "some tap repairs" gets generalised into "all tap repairs," and that's where things go wrong.

Here's where DIY tap repairs commonly fail:

1. Not fully isolating the water supply before opening the tap body - turning the wrong valve, or a valve that doesn't close fully, means water everywhere once the tap is opened.
2. Overtightening the packing nut - a common response when a tap leaks around the spindle rather than from the spout. Cranking it too tight damages the gland packing and can shear the nut entirely.
3. Fitting the wrong cartridge - ceramic cartridges are not universal. Getting the diameter, brand compatibility, or flow direction wrong means the replacement won't seat or seal correctly.
4. Damaging the chrome finish - tap bodies and hexagonal fittings are soft. The wrong spanner, or too much force, strips them permanently and turns a repair job into a replacement job.
5. Disturbing older pipework - in some Truro properties, particularly Victorian terraces and pre-war housing, the supply pipework behind tap fittings is original lead or early copper. Moving these connections without understanding the system can introduce a new leak where there wasn't one.

Calling a plumber to fix a leaking tap typically costs between 80 and 180 pounds including labour, depending on the complexity and the parts required. Calling one to fix a DIY repair that's gone wrong commonly costs more, because now they're dealing with a damaged fitting as well as the original problem. Knowing when to hand something over isn't a defeat - it's a sound financial decision.

Myth: A Leaking Tap Always Needs to Be Completely Replaced

The reality

This myth runs in the opposite direction from the washer one. While some homeowners assume the cheapest part is always the fix, others jump straight to assuming the entire fitting needs to come out. Both extremes miss the point, which is accurate diagnosis.

In the majority of cases, a leaking tap can be repaired rather than replaced. Worn cartridges, failed O-rings, damaged jumper valves, and deteriorated gland packing are all repairable. Parts for common UK tap brands - including Bristan, Grohe, Hansgrohe, Pegler, and Ideal Standard - are widely available from plumbing merchants, and many components cost between 15 and 45 pounds depending on the model. The labour to fit them is what drives the total cost, not the parts themselves.

There are situations where replacement is the correct call. If the tap body itself is cracked, if corrosion has eaten through the chrome to the base metal, if the valve seat is too damaged to re-grind, or if parts for that specific model are no longer available, a new tap is the better long-term investment. Full tap replacement - supply and fit, including a quality mid-range mixer - typically costs between 150 and 350 pounds, depending on the model chosen and the access involved.

The right answer between repair and replace depends on the condition of the tap body, the age of the fitting, and whether the underlying pipework is sound. A repair that buys several more years from a well-made tap in otherwise good condition is often the pragmatic choice. Replacing a tap when the actual problem is water pressure or pipework condition won't solve anything.

Myth: The Leak Is Always Coming from the Tap Mechanism

The reality

Water finds the easiest path. By the time a leak becomes visible - pooling under the sink, gathering around the base of the tap, or tracking along a wall - it may have originated several inches or more from where it appears. Assuming the tap mechanism is always at fault leads to missed diagnoses and work that doesn't solve the problem.

Common sources of tap-adjacent leaks that aren't the tap mechanism itself include:

• Loose or corroded compression fittings on the supply pipes feeding the tap
• Failed flexible tap connectors - the braided hoses between the isolation valve and the tap tail
• Deteriorated thread sealant on the tap tail where it joins the connector
• Cracked or split isolation valves directly below the tap fitting
• Condensation on cold supply pipes in warmer months, mistaken for a slow leak

In Cornwall's older housing stock - and Truro has a significant proportion of pre-1950s terraced properties - flexible tap connectors are a particularly common failure point. The braided steel outer covering can look intact while the inner hose has cracked. A thorough inspection of the full tap assembly, not just the visible fitting, is what separates a proper repair from a temporary fix that fails again in three months.

What Actually Matters - Expert Advice

Getting a leaking tap repaired properly comes down to accurate diagnosis first, then the right parts, then not creating new problems in the process of fixing the original one. Here's what to do if you're a homeowner in Truro dealing with a dripping tap:

1. Identify whether the drip is from the spout or from around the tap body - these point to different faults. Spout drip usually means a worn washer, cartridge, or valve seat. Body leak usually means the gland packing or O-rings.
2. Locate your isolation valves, typically under the sink on the hot and cold supply pipes. Turn them to check they close fully. If they don't, note it - a plumber needs to know that before starting work.
3. Work out what type of tap it is. Quarter-turn taps are almost certainly ceramic disc. Taps requiring multiple turns to fully close are typically compression. This determines what parts will be needed.
4. Note when the drip started, whether it has worsened, and whether water pressure elsewhere in the house has changed. That context helps identify whether the problem is localised to the tap or part of something broader.
5. Avoid using the tap more than necessary until it's repaired. Overworking a failing valve accelerates the damage and can turn a minor repair into a tap replacement.

A plumber attending a leaking tap in Truro will typically charge between 80 and 150 pounds for a washer or cartridge replacement including parts and labour. More complex repairs - damaged valve seats, inaccessible fittings, or leaks that turn out to involve the supply pipework - commonly run between 150 and 280 pounds. These are realistic ranges, not guarantees. Access difficulty, property type, and parts availability all affect the final cost, and Cornwall's varied housing stock means no two jobs are identical. The Voltrade GoFIX diagnostic tool helps our engineers log the relevant details before attending, which typically means arriving with the right components rather than making a return visit.

Myth-Busting Questions

Can you temporarily fix a leaking tap with PTFE tape?

PTFE tape is a thread sealant, not a mechanism fix. It seals threaded connections - the joints between pipe fittings - not moving internal parts. Wrapping it around a spindle or valve body won't stop a drip caused by a worn washer or failed cartridge. It might slow a very minor leak at a threaded joint, but it won't address the mechanical failure responsible for most tap drips. Use it where it belongs; don't expect it to substitute for a proper repair.

How long should a tap repair take on site?

A washer replacement or cartridge swap on a standard, accessible tap commonly takes between 30 minutes and an hour from arrival to completion. That includes isolating the supply, dismantling the fitting, fitting the new component, reassembling, and testing under pressure. More involved jobs - damaged valve seats, hard-to-reach fittings in cramped under-sink spaces, or leaks that turn out to involve the supply pipework rather than the tap - can run to two hours or more. Always allow for the possibility that the initial diagnosis isn't the whole picture.

Is it worth repairing an old tap or should I just replace it?

The answer depends on the condition of the tap body and whether parts are available. Taps from established brands - Grohe, Bristan, Hansgrohe, Pegler, Ideal Standard - commonly have spares available for 20 years or more after manufacture. Generic or discontinued taps may not. If the tap body is structurally sound and the fault is a worn internal component, repair is usually the better value. If the chrome is failing, the body is corroded, or the model is obsolete, replacement makes more sense long-term.

How much does leaking tap repair cost in Truro?

A standard tap repair in Truro - covering a washer replacement, cartridge swap, or O-ring renewal on an accessible fitting - typically costs between 80 and 150 pounds including labour and parts. More complex repairs involving valve seat damage, failed supply pipework, or inaccessible fittings commonly fall between 150 and 280 pounds. Full tap replacement, including a mid-range tap supplied and fitted, typically costs between 150 and 350 pounds depending on the model and access difficulty.

Can a leaking tap affect my water pressure?

In most cases, a single dripping tap won't noticeably reduce water pressure elsewhere in the house. However, a tap that's leaking because of a failed isolating valve or a partially open supply fitting can cause low pressure at that specific outlet. If you notice reduced flow at a tap alongside a visible drip, the issue may be with the valve or supply connection rather than the tap mechanism itself - which changes what needs to be repaired.

How quickly should I get a leaking tap repaired?

Sooner is nearly always better. A slow drip that's ignored commonly worsens as the valve mechanism continues to wear, and water damage to surrounding joinery or pipework compounds over time. For metered properties across Cornwall, the ongoing water waste also adds up on your bill. Most leaking tap repairs are non-emergency jobs that can be booked within a few days, but letting months pass typically increases both the repair complexity and the cost.