What to do when you have a dripping shower head
Expert Advice from Your Local Newcastle Plumber in Newcastle & NSW: How to Repair a Dripping Shower Head.
A dripping shower head might seem like a minor inconvenience—just a few drops every now and then. But if you’ve ever tried to fall asleep while hearing that maddening drip… drip… drip, you know how quickly it becomes a real headache. Beyond the annoyance, a persistent leak wastes thousands of litres of water each year and leads to rising water bills, mould growth, and long-term damage inside your walls or fittings.
As your trusted local Newcastle plumber, we’re here to explain why a dripping shower head happens, how you can fix it, and when it’s best to call in an expert. Whether you’re in Newcastle, Lake Macquarie or Maitland, these steps will help you understand what’s going on behind your bathroom walls and how to solve it effectively.
Why Is My Shower Head Dripping?
Before you grab the tools, it’s important to know what causes the leak in the first place. Most dripping shower heads fall into one of these categories:
1. Worn or Damaged Shower Taps
In Newcastle homes, many showers still use traditional hot-and-cold taps. Over time, the internal washers, o-rings, and valve seats inside those taps deteriorate. When they no longer create a tight seal, water continues to escape even when the taps are “off.”
2. Faulty Mixer Taps
Modern showers often use a mixer, and these rely on a ceramic cartridge. When that cartridge cracks or wears out, it allows water to seep through the outlet even when turned off.
3. Mineral Build-Up
Newcastle’s water supply is generally soft, but mineral deposits can still accumulate in shower heads, restricting flow and causing water to leak between fittings.
4. High Water Pressure
High water pressure is common across many Newcastle suburbs. When pressure is too high, seals inside taps and pipes fail faster, leading to leaks and dripping.
5. Internal Plumbing Issues
Sometimes the drip isn’t the shower head at all—it’s the pipework behind the wall. This requires professional diagnosis to prevent hidden water damage.
Why You Shouldn’t Ignore a Dripping Shower
A dripping shower head is more than annoying—ignoring it comes with real consequences:
- Higher water bills: A slow drip can waste up to 20,000 litres a year.
- Mould & mildew growth: Damp bathrooms create perfect conditions for mould, leading to health risks.
- Increased structural damage: Leaks can travel inside walls and ceilings, causing rot or bubbling paint.
- More expensive repairs later: A simple washer replacement can turn into a full tap rebuild if left untouched.
A small leak today can become a major repair tomorrow, so acting early always saves money.
How to Repair a Dripping Shower Head: Step-by-Step Guide
Below is expert guidance from local Newcastle plumber. This step-by-step method works for standard tap showers and is safe for most homeowners to attempt.
Important: If you have a mixer tap or if the leak is coming from inside the wall, you may need a licensed plumber. Mixer cartridges and internal leaks can be tricky—and cause damage if handled incorrectly.
Step 1: Turn Off the Water Supply
Most Newcastle homes have individual isolation valves near the shower, but if you can’t find one, turn off the main water supply at your water meter.
- Rotate the stop valve clockwise to shut the water off.
- Turn the shower taps on to confirm the water is off.
Safety first—never work on plumbing with the water running.
Step 2: Remove the Shower Head (If Needed)
If the problem appears to be mineral build-up or a blocked shower head:
- Unscrew the shower head from the arm.
- Soak it in a mixture of white vinegar and warm water for 30–60 minutes.
- Scrub with an old toothbrush to remove debris.
If cleaning the shower head doesn’t stop the drip, the issue is deeper—usually the tap mechanism.
Step 3: Remove the Tap Handles
Use a screwdriver to remove the tap buttons or covers (hot/cold indicators). Then:
- Unscrew the handle screw.
- Gently pull off the tap handle (you may need a handle puller if it’s seized).
This exposes the spindle and bonnet.
Step 4: Remove the Spindle and Tap Body
Use a shifting spanner or multi-grips to loosen the tap body. Inside, you’ll find:
- The washer
- The o-ring
- The valve seat (inside the wall)
Leaks usually come from one of these components.
Step 5: Inspect and Replace the Washer
Most dripping showers are caused by:
- Cracked washers
- Flattened washers
- Hardened washers
Replace with a high-quality washer designed for hot water use. Avoid cheap rubber ones—these wear out quickly.
Step 6: Replace the O-Ring
The o-ring sits around the spindle and helps maintain a seal.
- Remove the old o-ring with a small flat screwdriver.
- Lubricate the new o-ring with plumber’s grease.
- Slide it onto the spindle securely.
A worn o-ring can cause leaks inside the wall or around the tap handle.
Step 7: Check or Reseat the Valve Seat
The valve seat is where the washer seals against the wall fitting. If the seat has become:
- Pitted
- Worn
- Cracked
…it won’t create a watertight seal—even with a new washer.
You may need to:
- Use a reseating tool to restore a smooth surface, or
- Install a new valve insert
Reseating is one of the most common repairs we perform in Newcastle homes, especially in older bathrooms.
Step 8: Reassemble the Tap and Test
Put everything back in reverse order:
- Insert the spindle.
- Tighten the tap body.
- Reinstall the handle.
- Turn the water back on.
Then test for leaks.
If the drip has stopped—congratulations! You’ve successfully repaired your shower head.
If the leak continues, the issue likely lies deeper in the plumbing system or in the mixer cartridge.
What If Your Shower Uses a Mixer Tap?
Mixer taps operate differently, so repairing a drip requires replacing the mixer cartridge.
Signs the cartridge is failing:
- Water drips from the shower even when the mixer is “off.”
- The handle is hard to turn.
- You hear a squealing sound when adjusting temperature.
- Water pressure is inconsistent.
Cartridges are not universal—you must purchase the correct brand and size. Many homeowners call a plumber at this stage because:
- The cartridge can be difficult to remove.
- The shower recess can be damaged if too much force is used.
- The wrong replacement part can cause leaks behind the wall.
If you’re unsure, it’s safer to get a professional Newcastle plumber to handle it.
When the Leak Comes From Behind the Wall
This type of leak is more serious. Symptoms include:
- Moisture around the tiles
- Dripping even when the shower head is removed
- Musty smells
- Peeling paint or bubbling plaster
- Higher-than-normal water bills
Behind-wall leaks often come from:
- Split copper pipes
- Failed joints
- Loose fittings
- Corroded plumbing
These repairs require a licensed plumber, and the sooner you act, the less structural damage you’ll face.
Pro Tips from Newcastle Plumbing Specialists
✔ Use ceramic disc taps
They last much longer than traditional washer taps.
✔ Install a pressure limiting valve
Helps protect taps, pipes and shower fittings.
✔ Book a plumbing inspection every 2–3 years
Helps detect hidden leaks early.
✔ Replace old shower heads with water-efficient models
Save water and reduce pressure strain.
When to Call Newcastle Plumber
Call our licensed Newcastle plumbing team if:
- The leak continues after replacing washers
- You have a mixer tap
- You suspect a behind-wall leak
- The tap system is old or corroded
- You want the job done quickly and professionally
Prompt repairs save water, money, and prevent major structural damage.
A dripping shower head is annoying, costly, and often avoidable. With the right guidance, many homeowners across Newcastle and NSW can fix this issue themselves. But if the leak keeps returning or involves deeper plumbing components, your local Newcastle plumber is always ready to help.
Whether you live in Newcastle, Lake Macquarie, Maitland or surrounding suburbs, professional shower leak repair is only a phone call away.
Contact Newcastle Plumbing Services today
📍 Proudly Serving Newcastle, Lake Macquarie & Surrounds
📞 Call: (02) 49423300
🌐 Visit: www.newcastleplumbing.net.au
📧 Email: info@newcastleplumbing.net.au
Local, licensed, and always reliable — we’re here to keep your water flowing just right.
