Leaking Shower Repairs

When a shower starts letting water out

A leaking shower rarely announces itself. More often, the first sign is something slightly off elsewhere: a skirting board that has started to swell, carpet that feels damp along the wall outside the bathroom, a musty smell that will not go away, paint bubbling on the other side of the shower wall, or a stain spreading across a ceiling below. By the time these signs appear, water may have been escaping for months.

We repair leaking showers in Drouin and the surrounding towns. Our approach is straightforward: find out why the shower is leaking, explain the options honestly and fix the problem properly so it does not come back.

Common signs of a leaking shower

• Loose or drummy tiles inside or near the shower.
• Grout that cracks, crumbles or keeps going dark no matter how often it is cleaned.
• Silicone that peels away at the floor-to-wall junction or around the screen.
• Swollen or stained skirtings, architraves or door frames near the bathroom.
• Damp or mouldy carpet in adjoining rooms.
• Peeling paint or mould on walls behind or beside the shower.
• Water stains on ceilings below an upstairs bathroom.
• A persistent musty smell, especially after showers.
• Soft or springy floors near the shower in timber-floored homes.
• Termite activity near wet areas, since termites are drawn to damp timber.

Why showers leak

Showers leak for a range of reasons, and the right repair depends on the cause.

Failed or missing waterproofing

The membrane beneath the tiles is the barrier that keeps water out of the building. In older bathrooms, this membrane may have been minimal or absent, relying on the tiles and grout alone. In newer bathrooms, the membrane may have been damaged, poorly installed, not fully cured before tiling or not carried across junctions properly. Once the membrane fails, water reaches the screed, sheeting and framing.

Cracked grout and failed sealant

Grout is porous and will always let some water through. In a sound shower, the membrane underneath manages this. When grout cracks, more water gets through. At internal corners and the floor-to-wall junction, flexible sealant should be used instead of grout; when it fails, water enters at the most vulnerable points.

Poor falls

If the shower floor does not fall properly to the waste, water sits on the floor, finding its way through grout and into the screed. Ponding water near the screen or doorway is a common sign.

Leaking floor waste

The floor waste must be connected to the membrane with a puddle flange. Without it, water travels around the outside of the waste and into the structure.

Leaking plumbing

Sometimes the leak is not the shower floor at all but a pipe or fitting inside the wall, such as a mixer, shower arm or connection behind the tiles.

Structural movement

In homes on timber floors, movement in the floor can crack grout, tiles and membranes. Unless the movement is addressed, repairs will fail again.

How we assess a leaking shower

We start with a careful inspection. We look at the tiles, grout and sealant, check for drummy tiles, assess the falls, look at adjoining rooms and spaces below and talk through when and how the problem appears. Moisture meters help identify where materials are wet. Where it is safe to do so, we run water in specific areas to narrow down the source. The aim is to understand the cause before recommending a repair.

Repair options

Regrout and reseal

Where the membrane is intact and the problem is limited to grout and sealant, removing and replacing grout and flexible sealant can stop water entering. This is suitable only when the underlying waterproofing is sound and damage is minor. We are honest when this is not the case.

Partial rebuild

Where the problem is limited to one area, such as the floor of the shower or one wall, it may be possible to remove that section, repair the substrate, rewaterproof to AS 3740 and retile. Matching existing tiles can be difficult, which we discuss before work begins.

Full shower rebuild

Where the membrane has failed across the shower, or the falls or floor waste are faulty, the most reliable repair is to strip the shower back to the frame, fix any damaged framing or flooring, rescreed to correct falls, install a new membrane to AS 3740, fit a puddle flange and retile. This is the same standard we apply to a new bathroom.

Bathroom renovation

In some cases, especially where the whole bathroom is aging and multiple areas are affected, renovating the entire bathroom is the most sensible option. We help you weigh this against a shower-only repair.

Dealing with damage

Water from a leaking shower can damage more than the bathroom. Framing may be rotted, floor coverings in adjoining rooms ruined and plasterboard affected by mould. We assess this damage and include repairs in our scope where they relate to the bathroom. Where other trades are needed, such as carpet replacement or pest control, we let you know.

Insurance

Some home insurance policies cover sudden water damage but not gradual leaks or failed waterproofing. We can provide a written report of what we find to support a claim, but we cannot advise on whether your insurer will accept it. Contact your insurer early if you think you may be covered.

Why quick fixes often fail

There are many products marketed as sealing leaking showers without removing tiles. Some can help in limited situations, such as when grout alone is the problem. But they cannot repair a failed membrane, correct poor falls, fit a missing puddle flange or stop a leaking pipe. If the cause is underneath the tiles, the repair must be too. We will tell you honestly whether a minor repair is likely to work or whether a rebuild is needed.

The rebuild process

1. Inspection and diagnosis.

2. Written scope of the repair, including any related damage.

3. Strip-out of the affected shower area.

4. Repair of framing, flooring and substrate.

5. Rescreeding to correct falls.

6. Waterproofing to AS 3740, with a puddle flange and full cure times.

7. Tiling, grouting and flexible sealing.

8. Fit-off of screen, tapware and accessories.

9. Handover with photographs of the hidden work.

Preventing future leaks

• Run the exhaust fan during and after showers.
• Squeegee screens and wipe floors to reduce standing water.
• Clean grout with pH-neutral cleaners.
• Replace split or discoloured silicone promptly.
• Report loose tiles or cracked grout early.

Leaking showers in older Drouin homes

Many of the leaking showers we see around Drouin are in homes built between the 1960s and the 1990s. Some were built before waterproofing membranes were common practice in domestic showers, relying instead on a mortar bed, a metal or plastic tray, or simply the tiles. Others had membranes applied only to the shower floor and a short way up the walls. After thirty or forty years, these systems often fail. In homes on timber stumps, the subfloor beneath the shower can show signs of long-term moisture: dark staining, softened timber and sometimes termite damage. If your home has a subfloor you can access, a look underneath the bathroom with a torch is one of the most useful checks you can make.

Leaking showers in newer homes

Leaks also appear in newer homes, sometimes within a few years of construction. Common causes include membranes that were not fully cured before tiling, missing bond breakers at junctions, floor wastes without puddle flanges and screens fixed through the membrane without proper sealing. If your home is still within a builder’s warranty period, it is worth contacting the builder before arranging a repair. We can provide a written description of what we observe to help that conversation.

What to do while you wait

If you suspect a leak, reduce use of the affected shower where you can, keep the room well ventilated and dry any wet carpet or floor coverings nearby. Take photographs of any damage and note when it appears. This information helps us find the cause faster.

Common questions about leaking shower repairs

Can a leak be fixed without removing tiles? Sometimes, when the cause is only grout or sealant. If the membrane has failed, tiles must come off.

How urgent is a leaking shower? Ongoing leaks cause rot, mould and termite risk. Stop using the shower if you see active damage and arrange an inspection.

Will my new tiles match? Exact matches for older tiles are rare. We discuss options before starting.

Do you provide a report? Yes, we can provide written findings to support an insurance claim.

Book a design consultation

If you think your shower is leaking, book a design consultation. We will inspect the shower in your Drouin home, explain what we find and provide a written scope and quotation for the repair.

Areas we service

• Buln Buln
• Bunyip
• Darnum
• Drouin South
• Drouin West
• Drouin
• Garfield
• Jindivick
• Labertouche
• Longwarry
• Nar Nar Goon
• Neerim South
• Tynong
• Warragul