Fix a Dripping Shower or Mixer Valve
By The FixDelivered Team · Updated 2026-08-07 · 3 min read
A dripping shower is more than just an annoyance; it’s a constant waste of water and can lead to increased utility bills. Whether it’s a steady stream or an intermittent drip, addressing the problem promptly can save you money and prevent potential water damage. This guide will walk you through the common causes of a dripping shower or mixer valve and provide clear, step-by-step instructions for a competent UK homeowner to fix it themselves.
Why is my shower dripping?
Most shower drips stem from worn-out or faulty internal components:
- Worn Washers or O-rings: Common in older, traditional compression-style taps or valves. Rubber washers and O-rings degrade over time, losing their elasticity and sealing ability.
- Faulty Ceramic Cartridge: Modern mixer showers often use ceramic cartridges. These units contain ceramic discs that rotate to control water flow and temperature. If these discs become scratched, chipped, or if the internal seals fail, water can leak through.
- Limescale Build-up: Hard water can lead to mineral deposits accumulating on internal components, preventing them from sealing properly.
- Loose Components: Less common, but sometimes a loose nut or connection inside the valve body can cause a minor leak.
Tools you'll need
- Adjustable spanner
- Screwdriver set (flat-head and Phillips)
- Allen key set (if your shower handle has a grub screw)
- Utility knife or small flat-head screwdriver (for prying off caps)
- Replacement parts (new washers, O-rings, or a compatible ceramic cartridge)
- PTFE tape
- Bucket or bowl
- Old cloths or towels
- Wire brush or old toothbrush and white vinegar (for cleaning limescale)
- Silicone grease (plumber's grease)
Safety First
- Turn off the water supply: Locate your home's main stopcock (usually under the kitchen sink, near the water meter, or where the main water pipe enters your property) and turn it off. For apartments, there might be an isolation valve for your flat or just for the shower itself.
- Drain the pipes: Open the shower taps to drain any residual water from the pipes. This relieves pressure and prevents unexpected splashes.
- Protect surfaces: Place towels or a bucket in the shower tray to catch any drips and protect the surface from tools.
- Be gentle: Internal plumbing components can be delicate. Avoid excessive force when loosening or tightening parts to prevent damage.
How to Fix a Dripping Shower Mixer Valve (Cartridge Type)
This method applies to most single-lever mixer showers where temperature and flow are controlled by one handle.
- Isolate Water Supply: Turn off the main stopcock and drain the shower as described in
Frequently asked questions
How long does it take to fix a dripping shower?
For a competent DIYer, fixing a dripping shower typically takes 1-2 hours, depending on the valve type and ease of access to parts. A professional plumber can often complete the job much faster.
What's the average cost for a plumber to fix a dripping shower?
As a rough guide for 2026, you can expect to pay a plumber around £80-£150 for labour to fix a dripping shower, plus the cost of any replacement parts (e.g., a new cartridge could be £20-£60). Prices can vary based on location and the complexity of the repair.
Need a plumber now? Tell us your emergency and FixDelivered will find and confirm an available local plumber near you, usually within the hour.
Written by the FixDelivered Team. Reviewed by Rupert Lowe, Editor. Last updated 2026-08-07.