A leaking shower head is usually a simple, cheap fix. Most drips are caused by limescale in the head, a worn washer or O-ring, or a poorly sealed thread, all of which you can sort yourself. If the head keeps dripping after the water has fully drained, the valve cartridge is the likely cause. A leak you can hear but not see may be hidden, and worth a professional look.
A dripping shower head is annoying, but it is rarely a sign of anything serious. In most homes it comes down to one of a few small parts that have worn or furred up over time, and the fix takes minutes rather than a call-out. This guide walks through the usual causes in plain terms, the order to try the quick fixes, and the one situation where a persistent drip is telling you something bigger is going on behind the scenes.
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Why a shower head leaks
Almost every leaking shower head traces back to one of four things. Knowing which one you are dealing with tells you which fix to reach for, so it is worth a quick look before you pick up a spanner.
| Cause | What you tend to see |
|---|---|
| Limescale in the head | Patchy or sideways spray, blocked nozzles, and a dribble that carries on after the shower is off. Mineral deposits clog the holes and stop water clearing cleanly. |
| Worn washer or O-ring | Water weeping from the joint where the head meets the hose or arm. The little rubber seal there hardens and splits with age, so the joint no longer holds. |
| Poorly sealed thread | A steady drip or trickle right at the screw connection. The thread sealing tape has perished or was never fitted, so water creeps along the threads. |
| Worn valve cartridge | A drip that keeps going from the head long after the water has drained, because the valve is no longer shutting the supply off fully. This one usually needs a plumber. |
A quick note on limescale: here in Cornwall and Devon we are lucky to have some of the softest water in England, so furred-up heads are less of a problem locally than they are in the hard-water parts of the country. It still happens, just not as fast, so do not rule it out if your head has been on the wall a few years.
The quick fixes, in order
Work through these from the top. Each one is cheap, takes minutes, and rules out a cause before you move on. Turn the shower off at the valve before you start, and lay a towel in the tray to catch any drips and small parts.
1. Clean the limescale out of the head
Unscrew the shower head and soak it in a half-and-half mix of white vinegar and warm water for at least 30 minutes, longer if it is badly furred. Vinegar dissolves limescale without harsh chemicals. Give the nozzles a gentle scrub with an old toothbrush, rinse it through, and refit. On many showers this alone clears the dribble and brings the spray back to full strength.
2. Replace the washer or O-ring
If water is weeping from the joint rather than the nozzles, the seal has likely gone. Unscrew the head and look for the small rubber washer or O-ring inside the connector. If it is flattened, hardened or split, pop in a matching replacement from any plumbers' merchant or DIY shop. They cost pennies and are one of the most common causes of a leak.
3. Re-seal the thread with PTFE tape
For a drip at the screw connection itself, the thread needs re-sealing. Peel off any old tape, clean the threads, then wrap fresh PTFE tape (the white plumbers' thread tape) clockwise around them, two or three firm turns. Screw the head back on hand-tight, then a small quarter-turn more with a cloth-wrapped spanner to protect the finish. Do not overtighten, as too much force can crack the fitting.
Run the shower for a couple of minutes, then turn it off and watch. If the drip has stopped, you are done. If it has not, the cause sits further back in the valve, which we cover next.
Why it drips after you turn it off
This is the question we are asked most, so it is worth being clear. A shower head dripping after turning off is not always a fault. The head and the arm hold a small amount of water, and once you shut the shower down that water drains out under gravity. A few drips for a minute or two, then nothing, is completely normal, especially on larger rainfall heads that hold more water.
The drip that matters is the one that does not stop. If your head is still releasing water a good while after it should have drained, the shower is not closing off the supply properly. That points to the valve cartridge: the part inside the mixer or thermostatic valve that opens and closes the flow. Over years of use its internal seals wear, or limescale stops it seating cleanly, and a little water slips past even when the control is fully off. Replacing a cartridge is a job for a plumber, as it means isolating the supply and opening up the valve, but it is a repair rather than a whole new shower.
When the drip means something deeper
Most of the time, the steps above settle a leaking shower head for good. Now and then, though, a leak around a shower is a clue to something you cannot see, and that is worth taking seriously before it causes damage.
Be alert if you notice any of the following: damp patches or staining on a wall, ceiling or floor near the shower; a musty smell that will not shift; loose or lifting tiles; or a water bill that has crept up with no obvious reason. Water can track along pipes and timbers and surface well away from where it actually escapes, so the wet patch is not always above the leak. If the drip you can hear does not match anything you can find at the head or the joint, the water may be coming from a pipe behind the wall or under the tray.
This is where it pays to find the exact source rather than start pulling tiles off on a hunch. We locate hidden leaks across the South West using non-invasive methods such as thermal imaging and acoustic detection, so the problem is pinpointed before anything is opened up. If you suspect the trouble is behind the wall, our guide on how to find a leak in walls or ceilings is a good next read, and our plumbing leak detection service can take it from there. As a first move with any unexplained leak, it also helps to know where your water shut-off valve is, so you can stop the flow quickly if you need to.
Frequently asked questions
Why does my shower head keep dripping after I turn it off?
A short drip for a minute or two is normal, as water left in the head and arm simply drains out. If the drip carries on long after that, the shower is not shutting off fully. The usual culprit is a worn valve cartridge or its seals, which a plumber can replace.
How do I stop my shower head from leaking?
Start with the easy fixes. Soak the head in a vinegar solution to clear limescale, then check the washer or O-ring between the head and hose and replace it if it looks worn. If the joint itself weeps, re-seal the thread with fresh PTFE tape. A drip that survives all of this usually means the valve.
Is a dripping shower head wasting much water?
A slow drip looks harmless but adds up, especially with hot water, where you also pay to heat what runs away. Fixing it is cheap and quick. The bigger worry is a drip you can hear but not see, behind the wall or under the tray, which can soak structure before it ever shows.
Do I need to replace the whole shower if it drips?
Rarely. Most leaks come down to a blocked head, a worn washer or O-ring, a poorly sealed thread or a tired valve cartridge, all of which are repairs rather than replacements. Only when the valve body itself has failed, or the unit is very old, is a full swap worth considering.
When should I call a professional about a shower leak?
Call someone if the drip continues after you have cleaned the head, replaced the washer and re-sealed the thread, or if you see damp, staining or a rising water bill with no obvious source. A persistent or hidden leak can point to a fault behind the wall that needs locating before any damage spreads.
Drip you can hear but not find? Let's locate it properly
If a shower leak does not add up, or damp is showing up where it shouldn't, we find the source across Cornwall and Devon with non-invasive equipment. Fast response, minimal damage, no guesswork.
Call Dickie on 07822 025 911 No Find, No Fee on residential leak detection (subject to terms)