How to Fix a Leaky Shower Head?A Step by Step Guide for Vancouver Homeowners

In older homes across Metro Vancouver including Burnaby and New Westminster a dripping shower head is a common problem. This usually means the valve is worn out or the shower arm is corroded. A quick tightening will not fix this issue and the parts will need to be replaced.

Is Your Shower Head Actually Leaking Or Is It Normal?

Not every drip means something is broken.

A few drops right after you shut the shower off is normal. This is called run on. Water trapped inside the shower head drains out naturally. It usually stops within 10 to 30 seconds.

A real leak keeps dripping long after the shower is off. It may continue for several minutes or even hours. You may also notice water leaking from the connection between the shower head and shower arm while the shower is running.

In Metro Vancouver, the municipal water supply is naturally soft. Because of this, normal run on is usually short. If your shower keeps dripping, mineral residue or a worn internal part is often the cause.

A simple rule helps here:

• Dripping under 30 seconds = usually normal
• Dripping longer than 60 seconds = investigate the leak

The 5 Most Common Causes of a Leaky Shower Head

Here are the most common causes. 

1. Worn Washer 

This is the most common issue.

Inside the shower head connection is a small rubber washer or O-ring. Over time it dries out flattens, or cracks. Once that seal fails, water escapes around the connection.

Signs include:

• Dripping at the shower head connection
• Small leaks while the shower is running
• Water collecting around the nut

Most washers last about 5 to 10 years.

2. Failed Valve Cartridge

If water drips even when the shower is fully off the problem is usually inside the valve. The cartridge controls water flow. When it wears out it cannot fully stop water from passing through.

This is very common in older homes across Vancouver, Burnaby, and North Vancouver where original plumbing fixtures are still in use.

Typical signs include:

• Constant dripping from the shower head
• Water pressure changes
• Stiff or loose shower handle

For most homeowners, cartridge replacement is not a simple DIY repair. Taking toilet repair services from professionals like Lew Plumbing is always better.

3. Loose Connection at the Shower Arm

The shower arm connects the shower head to the plumbing behind the wall.

Over time this threaded connection can loosen because of vibration, heavy rainfall style shower heads, or years of use.

Signs include:

• Water leaking where the arm exits the wall
• Drips behind the escutcheon plate
• Water running down the wall

Sometimes tightening solves it. Sometimes the threads are damaged and the arm must be replaced.

4. Damaged or Missing Plumber’s Tape

PTFE tape often called Teflon tape seals threaded plumbing connections.

Old tape becomes brittle and stops sealing properly. If someone installed the shower head without enough tape, leaks can also develop.

Even a tight connection can leak if the tape seal fails.

5. Mineral or Debris Buildup in Spray Nozzles

Blocked spray nozzles increase pressure inside the shower head.

When water cannot escape properly, it pushes against seals and threaded joints. That extra pressure often causes dripping around the connection.

Metro Vancouver water is soft, but chloramine treatment and silica residue can still leave buildup inside fixtures over time.

For fixture cleaning and maintenance, we offer reliable sewage and drainage services.

Tools You Need Before You Start

Here are the tools you need. 

How to Fix a Leaky Shower Head

This process works for leaks at the shower head or shower arm connection.

Turn Off the Shower

• Shut the shower off completely.
• You do not need to shut off the home’s main water supply for basic shower head removal.
• Place towels below the fixture before starting.

Protect the Finish

• Wrap the connection nut with a soft cloth before using pliers or a wrench.
• This prevents scratches on chrome and brushed finishes.

Remove the Shower Head

• Turn the connection nut counterclockwise.
• Use steady pressure. Older fittings can seize because of corrosion.
• If it will not loosen, apply penetrating oil and wait 10 minutes.

Inspect the Washer and O-Ring

• Look inside the connection nut.
• If the washer looks cracked, flattened, or brittle, replace it.
• Take the old washer to a Vancouver hardware store to match the size correctly.

Clean the Shower Head

• Place the shower head in white vinegar for 30 to 60 minutes.
• This breaks down mineral residue inside the spray nozzles.
• Use a toothbrush to gently clean the openings.

Clean or Replace the Debris Screen

• Many shower heads contain a small mesh screen.
• Remove it carefully and rinse it under running water.
• Replace it if damaged.

Remove Old Plumber’s Tape

• Peel away all old PTFE tape from the shower arm threads.
• Do not wrap new tape over old tape.

Apply Fresh PTFE Tape

• Wrap the threads clockwise using 2 to 3 tight layers.
• Too much tape can crack the connection nut.

Reinstall the Shower Head

• Hand-tighten first.
• Then use a wrench for one small quarter turn.
• Do not overtighten. This often damages the new washer.

Test for Leaks

• Turn the water on and inspect the connection carefully.
• Run the shower for several minutes.
• Then turn it off and monitor for dripping.

For BC plumbing standards, visit Technical Safety BC

How to Fix a Shower That Drips When the Water Is Off

If water still drips after the shower is fully off, the cartridge is usually the problem.

The cartridge sits behind the handle inside the valve body. It controls both water flow and temperature.

Simple Cartridge Diagnosis Test

Remove the shower head completely.

Now watch the shower arm with the valve off.

• If water still drips from the arm, the cartridge is failing
• If dripping stops, the shower head itself was the issue

This simple test saves homeowners a lot of guesswork.

Replacing the Cartridge

Cartridge replacement usually involves:

• Shutting off the water supply
• Removing the handle trim
• Pulling out the old cartridge
• Installing an exact brand match

Brands like Moen, Delta, Grohe, and Kohler all use different cartridge systems.

Older Vancouver homes often have original valves with faded or missing branding. That makes matching parts difficult.

When Tightening and Resealing Doesn’t Stop the Leak

It happens in the following situations.

Corroded or Stripped Shower Arm Threads

Older galvanized shower arms often corrode internally. Once threads strip, no amount of tape will stop the leak. This is common in pre-1980 homes across East Vancouver and New Westminster.

Cracked Shower Arm or Shower Head

Hairline cracks allow water to escape under pressure. This often happens after years of overtightening. If the metal or plastic body is cracked, replacement is the only real fix.

Failing Valve Body Inside the Wall

Sometimes the leak is deeper inside the wall.

Warning signs include:

• Water stains below the shower
• Soft drywall
• Mould smell
• Bubbling paint

This is not a cosmetic issue. Hidden leaks can cause major structural damage if ignored.

How Mineral Buildup Makes Leaks Worse in Metro Vancouver

Over time these residues build up inside shower heads and spray nozzles. That buildup increases back-pressure. More pressure means more stress on washers and seals.

Homes in Richmond and Burnaby near older distribution infrastructure may also notice extra sediment buildup.

A simple maintenance routine helps:

• Soak shower heads in vinegar every 6 months
• Clean nozzles regularly
• Replace aging low-flow heads before internal buildup becomes severe

For local water quality information, visit Metro Vancouver Water Quality Information

DIY vs. Calling a Plumber: An Honest Cost Comparison

Metro Vancouver labour rates are high. A simple repair can save you money if you are comfortable doing it yourself.

But if the repair involves anything inside the wall, professional help is usually the safer choice.

When to Call Lew Plumbing in Vancouver

Replacing a washer or re-taping a shower head is a realistic DIY repair for many homeowners.

But if the leak involves:

• A failing cartridge
• Corroded threads
• Water behind the wall
• Soft drywall
• Persistent dripping after repairs

It is time to call a licensed plumber.

Lew Plumbing serves Vancouver, Burnaby, Coquitlam, New Westminster, North Vancouver, Port Coquitlam, Port Moody, Richmond, and West Vancouver.

If you’ve already replaced the washer and re-taped the connection but the shower still drips, the problem is likely deeper in the system. That’s the time for a proper diagnosis before the leak reaches your drywall or framing. 

Contact us to schedule a consultation.

FAQ

Why does my shower head drip after I turn it off?

A short drip for 10 to 30 seconds is normal. Longer dripping usually points to a worn valve cartridge or damaged seal.

Can a dripping shower head increase my water bill?

Yes. Even a slow drip wastes hundreds of litres of water every year.

How do I know if the valve cartridge is bad?

Remove the shower head and check if water still drips from the shower arm when the valve is off. If it does, the cartridge is failing.

How long do shower head washers last?

Most last between 5 and 10 years depending on usage and water conditions.

Can I replace a shower valve cartridge myself?

Possibly. But cartridges are brand-specific. Installing the wrong one can create bigger leaks or damage the valve.

Is a leaking shower dangerous?

A small drip is usually not urgent. But leaks inside the wall can lead to mould, drywall damage, and structural problems.