Bathroom Plumbing Problems and Solutions for Aldershot Homeowners

Published October 2026 | Bathroom Plumbing

We asked our Plumber engineers the questions Aldershot homeowners ask most. From dripping taps to hidden leaks, here's what they told us about the bathroom problems that come up again and again - and what you can actually do about them.

Why does my tap keep dripping even after I turn it off?

A dripping tap is one of the most common calls we get from homeowners across Aldershot. In most cases, the culprit is a worn washer or O-ring inside the tap body. Every time you turn a tap on and off, that washer compresses against a valve seat. Over time - particularly in hard water areas - it deteriorates and no longer forms a proper seal.

The fix depends on the type of tap you have. Traditional pillar taps use rubber washers, which cost next to nothing to replace. Mixer taps and ceramic disc taps use a cartridge instead, and these typically cost between 10 and 40 pounds depending on the brand. If you're replacing a cartridge, take the old one to a plumbing merchant to match it exactly - there are hundreds of different types.

Here's what to do before calling anyone:

1. Turn off the water supply at the isolator valve under the sink, or at the main stopcock.
2. Turn the tap on to release pressure from the pipe.
3. Remove the tap head by unscrewing the grub screw under the decorative cap.
4. Pull out the washer or cartridge and compare it against replacements at a plumbing merchant.

If you'd rather have an engineer do this, it's typically an hour's work. Labour costs in this part of Hampshire usually run between 60 and 100 pounds for this kind of repair, depending on the tap type and access.

What's causing my toilet to keep running after I flush?

A continuously running toilet wastes water round the clock. In Hampshire, where water rates are far from cheap, this adds up fast - a leaking cistern can lose thousands of litres a month. The most common cause is a worn flapper valve at the bottom of the cistern. When it degrades, water trickles through into the bowl and the cistern refills constantly to compensate.

You can check for this yourself. Add a few drops of food colouring to the cistern. If colour appears in the bowl without flushing, the flapper is leaking.

Other causes include:

• A float set too high, causing water to spill into the overflow pipe
• A corroded or worn siphon on older UK-style cisterns
• A cracked cistern body

Replacing a flapper or fill valve is a low-cost repair. Parts typically cost between 10 and 30 pounds, and a plumber will usually charge 60 to 90 pounds for labour. Siphon replacement on older toilets takes a bit longer and often costs 80 to 150 pounds all in. If your toilet is more than 15 to 20 years old and causing repeated problems, it's worth thinking about whether a replacement would save you more in the long run.

Why is my shower pressure so low?

Low shower pressure is one of the most frequently reported bathroom complaints we deal with, and the cause can sit in several different places. The first thing to check is the showerhead itself. Limescale blocks the spray nozzles, especially in hard water areas, and significantly restricts flow. Soaking the head in white vinegar overnight often restores normal pressure without any cost at all.

If the rest of the house has good pressure and only the shower is affected, check whether the isolating valve on the supply pipe is fully open. It sounds obvious, but these valves are sometimes left partially closed after previous work.

For electric showers, reduced pressure or heat can indicate a failing heating element. For thermostatic mixer showers fed from a cold water tank, you may need a booster pump installed - this typically costs between 250 and 550 pounds including parts and fitting.

If pressure is low throughout the property, the problem may be with your incoming supply or a pressure-reducing valve set too conservatively. Contact your water supplier before spending money on internal work - in some cases, they're responsible for investigating and resolving low supply pressure to the property boundary.

My bath is draining really slowly - what should I do first?

Slow bath drainage almost always comes down to a build-up of hair, soap residue, and limescale in or near the trap - the U-shaped section of pipe just below the plug hole. This is usually something you can sort yourself before calling anyone.

1. Remove the plug or drain cover and use a pair of needle-nose pliers or a drain claw to pull out any hair you can reach.
2. Pour a kettle of boiling water down the drain, followed by a cup of bicarbonate of soda and a cup of white vinegar. Let it sit for 20 minutes, then flush with more hot water.
3. If the trap is still slow, locate the access panel on the side of the bath, unscrew the trap, and clear the blockage manually. Keep a bucket handy.

Use chemical drain cleaners sparingly. They can degrade rubber seals in older traps and create bigger problems further down the line. They're also not a fix for blockages that sit deeper in the pipework.

If the blockage keeps coming back, the problem may be further along the waste pipe. A plumber can use drain rods or a motorised drain eel to clear obstructions that are beyond DIY reach. This typically costs between 60 and 150 pounds depending on severity and access.

What's causing the banging and knocking sounds in my bathroom pipes?

That loud bang when you turn a tap off quickly - or when the toilet finishes filling - is called water hammer. It's caused by a pressure wave moving through the pipework when water flow stops abruptly. It's more common in older Aldershot properties where pipes aren't adequately secured to joists and walls, and where incoming water pressure is on the higher side.

The main causes are:

• High incoming water pressure - anything consistently above 3 bar can cause problems in domestic systems
• Loose pipe clips letting pipes vibrate against the structure
• Fill valves in the cistern that shut off too quickly
• Air trapped in the pipework

Fitting a pressure-reducing valve on the incoming supply is one of the most effective fixes and typically costs 100 to 200 pounds installed. Securing loose pipes where they're accessible is a minor job. Replacing a noisy fill valve in a cistern often costs less than 80 pounds all in and makes a noticeable difference immediately.

Air in the pipes causes a different sound - more irregular and gurgling rather than a sharp bang. Bleeding the radiators and checking the boiler system pressure usually resolves this, and it doesn't necessarily require a plumber visit to sort out.

Why does my bathroom smell like a drain or sewage?

A sewage smell in the bathroom is always unpleasant, but it's usually down to one of three things: a dry trap, a failed toilet pan seal, or a problem with the waste vent stack.

Every sink, bath, and shower has a trap - a U-bend that holds a small amount of water and blocks drain gases from rising into the room. If a bathroom isn't used regularly (a guest en suite, for example), that water can evaporate and the barrier disappears. Pouring water down the drain fixes this immediately. Adding a small amount of cooking oil helps slow evaporation in drains that rarely get used.

If the smell appears to come from the toilet itself, check around the base for damp patches or staining. The rubber pan seal between the toilet and the floor pan can degrade over time, allowing drain gases - and occasionally water - to escape. Replacing a toilet pan seal typically costs 80 to 200 pounds including labour, depending on the toilet type and whether the existing seal has caused any secondary damage.

In some older Hampshire properties, the soil vent pipe has been incorrectly modified or partially blocked over the years. When this happens, gases get drawn back through the traps rather than venting safely outside. A plumber can carry out a smoke test to trace exactly where the problem originates.

How do I know if I have a hidden water leak in my bathroom?

Hidden leaks can run for weeks before a homeowner notices them. By that point, damage to floorboards, joists, and the ceiling of the room below can be significant and expensive. Knowing what to look for early on saves a lot of money.

Watch for these warning signs:

• An unexplained increase in your water bill with no change in usage
• Damp patches or brown staining on the ceiling beneath the bathroom
• Soft or spongy floor tiles or floorboards near the bath, shower, or toilet
• Mould growth on walls that can't be explained by condensation alone
• The sound of running water when all taps and appliances are off

Here's a quick DIY check: turn off everything in your home that uses water, then note the exact reading on your water meter. Come back 30 minutes later without using any water. If the meter has moved, there's an active leak somewhere in the system.

Our engineers use moisture meters and thermal imaging cameras to locate hidden leaks without tearing up floors unnecessarily. The Voltrade GoFIX diagnostic tool also lets you log your symptoms and get an initial assessment before booking an engineer, which can help narrow down where the problem is likely to be. Repair costs vary widely - a leaking compression joint behind a panel might cost 80 to 150 pounds to fix, while a corroded pipe within a floor structure can run to 500 pounds or more once access and reinstatement are factored in.

Should I repair or replace old bathroom pipework?

This is a question we hear regularly from owners of older properties in Aldershot, particularly those built before the 1970s or 1980s that may still have lead or early copper pipework. The right answer depends on what the pipes are made of and what condition they're currently in.

Lead pipework should always be replaced. It poses a health risk, particularly to young children, and water companies in this part of Hampshire sometimes contribute to the cost of replacing the section running from the property boundary to the internal supply. Contact your local water supplier before commissioning any work, as there may be a scheme available to you.

Copper pipework in generally good condition can last for many more decades, so wholesale replacement isn't always necessary. However, if you're seeing repeated pinhole leaks - more common in areas with harder or more chemically aggressive water - it often works out cheaper to repipe a bathroom section than to keep patching individual failures every few years.

Modern plastic push-fit pipe - Hep2O and JG Speedfit are two widely used brands - is reliable, flexible, and faster to install than copper, which brings labour costs down. Repiping a bathroom typically costs between 400 and 1,200 pounds depending on access, the number of connections involved, and whether tiles need to come off to reach the pipes. If you're planning a bathroom renovation anyway, it makes sense to have the pipework inspected and replaced as part of that project rather than doing it separately.

What does bathroom plumbing work typically cost in Aldershot?

Pricing is always the question homeowners want answered directly, so here's a general guide based on what our engineers typically see in and around Aldershot. These are estimates - final costs depend on access, parts availability, and the specific complexity of the job.

• Dripping tap repair: 60 to 120 pounds
• Toilet fill or flush valve replacement: 80 to 150 pounds
• Shower pump installation: 250 to 550 pounds
• Bath or shower drain clearance: 60 to 150 pounds
• Toilet pan seal replacement: 80 to 200 pounds
• Pressure-reducing valve fitted: 100 to 200 pounds
• Bathroom section repipe: 400 to 1,200 pounds

Most plumbers charge between 50 and 80 pounds per hour. Emergency or same-day call-outs typically attract a call-out fee of 50 to 80 pounds on top of that. Established local firms with decades of experience serving the Aldershot area will generally provide a fixed quote before starting work. If anyone is reluctant to do this on a repair job, that's worth noting. Always ask for written confirmation of the price before anyone touches your pipework.

Bathroom plumbing problems rarely improve on their own. A slow drip left unchecked can waste hundreds of litres a month, and a minor leak under a bath can silently rot floor joists over months. Getting an engineer in early almost always costs less than dealing with the secondary damage that builds up when problems are left to develop.

Frequently Asked Questions

How often should bathroom plumbing be inspected?

Most plumbers recommend a basic visual check every year or two, particularly for properties with older pipework or appliances. Look for signs of corrosion around joints, moisture near the base of the toilet, and slow drainage. Catching small issues early is considerably cheaper than dealing with the results of a failure that's been developing quietly for months.

Can I carry out my own bathroom plumbing repairs?

In England, most basic plumbing work - replacing tap washers, clearing blocked drains, swapping toilet flush valves - can be done by a competent DIYer without any legal requirement to use a professional. However, work involving gas appliances must always be carried out by a Gas Safe registered engineer. For anything beyond basic repairs, getting a qualified plumber is usually the safer and more cost-effective choice.

How long does a typical bathroom plumbing repair take?

Most common repairs - a dripping tap, a running toilet, a blocked trap - take between 30 minutes and two hours. Larger jobs like shower pump installation or repiping a section of bathroom can take a full day or more. If your plumber needs to order specific parts, factor in an extra day or two before work can be completed.

What should I do if a pipe bursts in my bathroom?

Turn off the main stopcock immediately - it's usually located under the kitchen sink or where the supply pipe enters the property. Then turn on all the cold taps in the house to drain the pipework and reduce water damage. Once the flow has stopped, call a plumber. Do not attempt to repair a burst pipe while the water supply is still live.