Leaking Tap Repair in Shaftesbury - A Homeowner's Guide to Getting It Fixed

Published August 2026 | Leaking Tap Repair Guide

You first notice it at half past midnight - a steady drip from the bathroom tap that sounds like a metronome through the quiet of the house. By morning it's still going, and now there's a faint rust ring forming around the plughole. It feels minor, but that drip is costing you money, and in older Shaftesbury properties with period fittings, it can be the start of something more serious if you leave it.

Understanding What Is Actually Happening Inside Your Tap

A dripping tap is essentially a seal that's no longer doing its job. Every tap - whether it's a traditional pillar tap in a Victorian terrace or a sleek mixer tap in a newer build - works by pressing some kind of seal against a valve seat to cut off the flow of water. When that seal wears down, degrades, or gets damaged, water finds a way past it and you end up with a drip.

The two broad categories of taps our engineers see in Shaftesbury homes are compression taps and ceramic disc taps. Compression taps use a rubber washer that you physically compress down onto a valve seat when you turn the handle. These are common in older properties and are relatively simple to repair. Ceramic disc taps use two precision-machined ceramic discs that rotate against each other to control flow - they're more durable but when they fail, the repair is different.

The location of the drip also tells you something. Water dripping from the spout means the problem is internal - the washer, cartridge, or disc. Water leaking from around the base of the handle or from the packing nut points to a different kind of seal failure, and water appearing around the base of a mixer tap often indicates a failed O-ring. Each of these has its own fix.

The Most Common Causes of a Leaking Tap

In our experience working across Dorset, the cause usually comes down to one of a handful of familiar culprits. Here's what we typically find.

Worn or Deteriorated Rubber Washers

This is by far the most common cause in older properties. Rubber washers take a beating - every time you turn the tap off, that washer gets compressed against a hard brass or steel seat. Over time, the rubber hardens, cracks, or flattens, and it can no longer form a watertight seal. In properties with harder water (and parts of Dorset do see moderate water hardness), mineral deposits can accelerate this wear, pitting both the washer and the seat it presses against.

The fix for a worn washer is one of the cheaper plumbing repairs you'll encounter. The washer itself costs pennies. The labour is the main cost, though a competent DIYer with the right tools can often handle this themselves - we'll come to that later.

Damaged or Worn Ceramic Disc Cartridge

Ceramic disc taps are marketed as low-maintenance, and they largely are - but the discs can chip, crack, or accumulate enough limescale to prevent a proper seal. When a ceramic cartridge fails, you typically get a persistent drip or, in some cases, difficulty controlling water flow. The cartridge in these taps is a self-contained unit, so the repair involves replacing the whole cartridge rather than just a washer.

This is a job that requires the correct replacement cartridge for your specific tap make and model. Bring the old cartridge with you to the merchant, or take a photo and the tap brand if you're ordering online. Brands vary considerably in their cartridge design and sizing.

Worn O-Rings

O-rings are small rubber rings that create a watertight seal around the spindle of the tap and at various joints. When they degrade - which happens naturally over years of use - you get water leaking around the handle or base of the tap rather than from the spout. This is particularly common in mixer taps and in taps that see heavy use, like a busy kitchen tap.

O-rings are inexpensive, but getting to them requires dismantling the tap. If the O-ring has been leaking for a while and corrosion has set in around the spindle, what should be a simple job can become considerably more involved.

A Corroded or Pitted Valve Seat

The valve seat is the surface that the washer presses against inside the tap body. In areas with harder water or in taps that are simply old, the valve seat can pit and corrode. Once the seat is damaged, even a brand-new washer won't create a proper seal because there's no smooth surface for it to press against. The fix here is either re-grinding the seat using a tap reseating tool, or replacing the tap entirely if the damage is too extensive.

This is one of those situations where the apparent simplicity of "just change the washer" gets complicated. Our engineers use Voltrade GoFIX to diagnose tap issues properly before starting work - it helps identify when a simple washer swap won't solve the problem and a seat regrind or full replacement is the better call.

Loose Packing Nut

The packing nut sits below the handle and keeps water from working its way up the spindle. If it's loose, you'll see water seeping around the handle when the tap is in use. Sometimes this is as simple as tightening the nut a quarter turn with the right spanner - but over-tightening can make the tap stiff and difficult to operate, so it's worth being careful.

Solutions That Actually Work

The right solution depends on what you're dealing with. Here's how our engineers typically approach the most common scenarios.

For a dripping compression tap (rubber washer):

1. Turn off the water supply at the isolation valve under the sink, or at the stopcock if there's no isolation valve.
2. Turn the tap on fully to release any remaining pressure and drain the water from the line.
3. Remove the tap handle - there's usually a screw hidden under a decorative cap on top.
4. Use a spanner to undo the packing nut and remove the headgear (the internal mechanism).
5. Unscrew the jumper from the bottom of the headgear and replace the washer. Match the size exactly - common sizes are 3/4 inch and 1/2 inch.
6. Reassemble in reverse order, turn the water back on, and test.

For a dripping ceramic disc tap:

1. Shut off the water as above.
2. Remove the handle and unscrew the cartridge retaining nut.
3. Pull the cartridge straight out - note the orientation.
4. If there's visible limescale, try soaking the cartridge in white vinegar for a few hours before deciding whether to replace it.
5. If replacing, fit the new cartridge in the same orientation and reassemble.

For O-ring replacements and valve seat issues, the process is similar in principle but more involved in practice. You'll need to identify and source the correct O-ring sizes, and for seat regrinding you'll need a reseating tool - a piece of kit most homeowners won't have in the toolbox.

When to Sort It Yourself and When to Call a Professional

This is a question we get asked a lot by Shaftesbury homeowners, and the honest answer depends on a few things.

A DIY attempt is reasonable if: you're dealing with a standard compression tap, you can isolate the water supply confidently, you have basic tools (adjustable spanner, flat-head and cross-head screwdrivers, pliers), and you're comfortable working methodically. A washer replacement in a standard pillar tap is genuinely one of the more accessible plumbing jobs there is.

Call a professional if: the tap is a mixer tap with a ceramic cartridge you can't identify, the tap hasn't been touched in decades and you're worried about seized components, there's corrosion visible around the connections, you're renting and need a documented repair, or the drip has already caused water damage that needs assessing. In Shaftesbury's older housing stock - including the town's many stone-built period properties - corroded pipework and unusual fittings are more common than you'd find in a newer development, and it's worth having someone experienced take a look before forcing anything.

Also worth noting: if your property's water pressure feels unusually high, that's often a contributing factor to tap wear and drips. A plumber can check and fit a pressure reducing valve if needed - something that protects all the taps and appliances in the house.

What to Expect From a Professional Tap Repair Visit

If you decide to book a plumber, here's typically what happens and what it's likely to cost.

For a straightforward washer replacement or ceramic cartridge swap, most plumbers in the Dorset area will diagnose and complete the repair in a single visit lasting 30 to 60 minutes. Labour typically costs between 60 and 120 pounds for this kind of job, depending on the plumber's call-out rate and how accessible the tap is.

If the valve seat needs regrinding, or if the tap itself needs replacing, expect to pay more. A full tap replacement - supply and fit with a mid-range tap - typically comes in between 150 and 280 pounds, depending on the tap chosen and the complexity of the installation. Our engineers will always confirm what's needed before starting work so there are no surprises.

A good plumber will also check the isolation valves while they're there - these are the small inline valves under the sink that let you shut off water to a single tap without cutting supply to the whole house. If they're seized (which is common in older properties), getting them freed or replaced is worth doing at the same time.

Most reputable plumbers operating in and around Shaftesbury will be able to give you a rough estimate over the phone if you describe the tap type and the nature of the drip. If they can't, that's a reasonable thing to ask about before booking.

Common Questions From Shaftesbury Homeowners

How much water does a dripping tap actually waste?

Quite a lot, in most cases. A tap dripping once per second can waste well over 5,000 litres of water per year - enough to fill several large water butts. If you're on a water meter, that waste shows up directly on your bill. Even on a fixed rate, significant water waste is worth fixing on principle. The good news is that a dripping tap is typically one of the cheaper plumbing repairs you'll face, so the payback time is short.

My tap is old and I'm worried about making the problem worse by trying to fix it myself - should I just replace it?

Not necessarily - but it's a fair concern, especially with taps that haven't been touched in years. Seized locknuts and corroded spindles can turn a simple job into a broken fitting. If the tap is genuinely very old or you can see corrosion around the base, it's worth having a plumber assess it first. They can tell you whether a repair is viable or whether replacing the whole tap is the more sensible and cost-effective option in the long run.

Can a dripping tap damage my home over time?

Yes, if it's left long enough. A slow drip from a bathroom tap can saturate the sealant around a basin and eventually cause water to penetrate behind tiles or into the cabinet below. In older Shaftesbury properties with wooden floorboards or period cabinetry, that kind of slow moisture exposure can cause rot and significant damage. The drip itself is cheap to fix - the water damage that follows from ignoring it is not.

Do I need to turn the water off at the mains to fix a tap in a Dorset property?

Not always, but it depends on whether you have working isolation valves fitted inline on the supply pipes. These are the small flat-head slots or lever valves typically found under a kitchen or bathroom sink. If they work, you can shut off water to just that tap without affecting the rest of the house. If they're seized or missing, you'll need to use the main stopcock - which is usually located under the kitchen sink or in a utility area. It's worth knowing where yours is before you need it in a hurry.