Leaking Showers – A Thorough Guide

Several signs can indicate if your shower is leaking. Here are some common indicators to look out for:

Dripping or running water

If you notice water dripping from the showerhead even when it’s turned off or hear the sound of water running when no one is using the shower, it could be a sign of a leak.

Water stains or discolouration

Check the walls, ceiling, or floor surrounding the shower for any water stains or discolouration. These marks can indicate that water is seeping through and causing damage.

Mould or mildew growth

Excessive moisture from a leak can lead to mould or mildew growth. Look for these signs in the shower area, such as black or green spots, a musty smell, or peeling paint.

Soft or deteriorating walls/flooring

A leaking shower can cause the walls or flooring near the shower to weaken or deteriorate over time. If you notice any sponginess, warping, or crumbling of the materials, it could be due to water damage.

Increased water bills

A sudden spike in your water bill without explanation could indicate a leak. If you suspect a shower leak but don’t see any visible signs, monitor your water usage and bills to see if there’s a significant increase.

Low water pressure

A shower plumbing leak can reduce water pressure. If you’ve noticed a drop in water pressure while using the shower, it may be worth investigating for a potential leak.

Wet or damp spots

Check the area around the shower, including the bathroom floor and walls, for wet or consistently humid places. These could indicate water escaping from the shower and seeping into surrounding areas.

If you notice any of these signs, it’s advisable to take action and address the issue promptly. Fixing a shower leak helps conserve water and prevents further damage to your bathroom and potential mould growth. Consider contacting a professional plumber if you need help to identify or resolve the problem independently.

How Does a Moisture Meter Work?

A moisture meter is invaluable for detecting leaks and moisture levels in various materials, including showers. While there are different types of moisture meters, the most common type used for detecting leaks in showers is a pin-type moisture meter. Here’s how it generally works:

Pin-type moisture meter

This type comprises two metal probes or pins inserted into the tested material. The pins send a small electrical current through the material.

Electrical conductivity

When the pins come into contact with moisture, the electrical conductivity of the material increases. Water is a good conductor of electricity, so moisture affects the material’s electrical resistance.

Resistance measurement

The moisture meter measures the resistance the electrical current encounters as it passes through the material. This resistance is converted into a moisture content reading, usually displayed as a percentage or a numerical value on the meter’s screen.

Moisture readings

By inserting the pins into the areas suspected of having leaks or high moisture levels, such as walls, floors, or ceilings near the shower, the moisture meter can provide readings that indicate the presence and extent of moisture.


Moisture meters typically have a scale or reference chart that helps interpret the moisture content readings. The scale may indicate moisture levels ranging from dry to wet and may vary depending on the tested material.

It’s important to note that moisture meters are not foolproof and may have limitations. They provide a relative indication of moisture content compared to the surrounding area. Other factors, such as temperature, surface conditions, and moisture depth, can also affect the readings. Therefore, it’s advisable to use a moisture meter combined with other signs and observations to determine the presence of a shower leak accurately.

Suppose you suspect a leak in your shower. In that case, it’s recommended to consult a professional plumber who can thoroughly inspect and use specialised tools, including moisture meters, to identify and resolve the issue effectively.

How Do Professionals Fix Leaking Showers?

When it comes to fixing leaking showers, professionals like ePoxy Grout Worx typically follow a systematic approach to identify and address the underlying cause of the leak. Here’s a general outline of the steps professionals may take:


A professional plumber will begin by thoroughly inspecting the shower and its components to determine the source and extent of the leak. They will examine the showerhead, faucets, pipes, valves, drains, and surrounding areas for any signs of damage or wear.

Repairing or replacing components

Depending on the inspection findings, the plumber may repair or replace specific elements causing the leak. This could involve replacing worn-out washers, seals, O-rings, or valves. Sometimes, they may need to repair or replace damaged pipes or fittings.

Regrouting and caulking

If the leak originates from gaps or cracks in the grout or caulk, the plumber may remove the old grout or caulk and reapply a fresh layer. This helps ensure a watertight seal between the shower tiles or enclosure.


In cases where the leak is due to inadequate waterproofing behind the shower walls or floor, the professional may need to apply a waterproofing membrane or coating to prevent water from penetrating the surrounding areas. This step is crucial to protect the structural integrity of the bathroom and prevent future leaks.

Testing and verification

After making the necessary repairs, the plumber will conduct tests to ensure the leak has been resolved successfully. This may involve running water through the shower system and checking for any signs of leakage. They may also use moisture meters or other tools to verify that the moisture levels are within acceptable limits.

Clean-up and restoration

Once the leak is fixed and confirmed, the plumber will clean up the work area and restore any surfaces that were removed or damaged during the repair process. This may involve retiling, repainting, or resealing the affected areas to bring the shower back to its original condition.

It’s worth noting that the exact repair process can vary depending on the specific type of shower, the nature of the leak, and the underlying plumbing system. In some cases, more extensive repairs or renovations may be necessary if the leak has caused significant damage. Hiring a professional plumber with expertise in shower repairs ensures that the issue is properly diagnosed and resolved, reducing the risk of further expensive damage or recurring leaks.