How do we know if our shower is leaking?
The clearest sign is moisture showing up outside the shower itself. If we notice any of these, it’s worth getting checked before it gets worse:
- A damp patch, discolouration, or bubbling paint on the ceiling below the bathroom
- A musty smell in the bathroom or the room next door
- Cracked, missing, or crumbly grout, or mould around the silicone joints
- Soft, swollen, or warped flooring near the shower
- A shower base or screen that feels unstable or has visible cracks
Any one of these can point to a leak, and the source is often not where the damage shows up. That’s why getting it looked at properly matters before any repair work starts.
Common Causes of Shower Leaks in Wollongong Homes
Most shower leaks come down to one of a handful of problem spots, and they’re often invisible until the damage starts showing up somewhere else in the house. Here are the usual culprits we find.
Failed or Worn Out Waterproofing Membrane: The membrane under the tiles has a lifespan, and a lot of Illawarra homes have membranes well past theirs. Once it fails, water gets straight through to the framing underneath.
Cracked or Crumbling Grout: Grout can look fine from a distance but still let water through once it starts cracking or crumbling. It’s one of the easiest things to miss.
Failed Silicone Joints: The silicone where the shower base, walls, and screen meet is a common weak spot. Once it goes, water finds its way behind the tiles.
Cracked or Porous Shower Base: A hairline crack might just be surface wear, but a deeper crack can let water through to the subfloor below.
Leaking Shower Screen Seals or Channels: These get written off as minor, but a leaking seal or channel can be hiding a bigger problem behind the scenes.
The damage you notice — a stain, some mould, a soft patch — is rarely right next to where the leak is actually coming from. That’s why working out the real source matters before any repair starts.
Repair or Full Strip-Out? How We Decide
Not every shower leak means a full renovation, but some genuinely do. Here’s how we work out which one we’re dealing with.
| Sign or Scenario | Likely Fix |
|---|---|
| One failed silicone joint, rest of the shower fine | Reseal the joint |
| A single cracked tile, membrane underneath still intact | Replace the tile, no strip-out needed |
| Leaking screen seal only, no other damage | Reseal or replace the seal |
| Grout failing in multiple spots across the shower | Full strip-out and re-waterproofing |
| Membrane at the end of its life | Full strip-out and re-waterproofing |
| Damage to the subfloor or wall framing | Full strip-out and repair to the substrate |
We’ll always tell you straight which category your bathroom falls into, and why.
The Cost of Delaying a Shower Leak Repair
A shower leak doesn’t announce itself straight away. By the time we see a damp patch on the ceiling or a soft spot in the floor, the damage has usually been building for months behind the scenes.
Left alone, that moisture works its way into the wall framing and starts rotting the timber. It gets into the plasterboard and causes it to soften and break down. Mould starts growing inside the wall cavity where you can’t see it, and the subfloor can end up damaged too.
None of this is meant to scare anyone — it’s just how water behaves once it gets behind the tiles. The earlier it’s caught, the smaller and more straightforward the fix. And getting it fixed properly the first time, to the right standard, is what stops this cycle from starting again.
Waterproofing Compliance and AS 3740
Any waterproofing repair, whether it’s a small patch job or a full strip-out, needs to meet the Australian Standard AS 3740. This is the standard that sets out how waterproofing in wet areas is supposed to be done, and it’s there for good reason — get it wrong and the problem just comes back.
In NSW, waterproofing work needs to be carried out by a licensed waterproofer. This isn’t just a box-ticking exercise. If the work isn’t done by someone licensed and to the right standard, it can void your home insurance, and it can become a problem when you go to sell the house down the track.
We always do our waterproofing repairs to AS 3740, with licensed tradies. It costs more upfront than a quick fix from someone cutting corners, but it’s the only way the repair actually lasts.
Our Shower Leak Repair Process
When we come out to fix a leaking shower, here’s how the job runs from start to finish.
- Leak assessment and diagnosis — we work out where the water is actually coming from, not just where it’s showing up
- Scope confirmation with you — we walk you through what we’ve found and what needs to happen before any work starts
- Water supply isolation — we shut off the water to the area so work can begin safely
- Strip-out of affected areas — we remove tiles, screens, or fittings as needed to get to the problem
- Substrate inspection and repair — if the wall framing or subfloor has been damaged, we sort this out before moving on
- Re-waterproofing to AS 3740 — the membrane goes back in to the proper standard
- Retiling — tiles go back on once the waterproofing is done and signed off
- Silicone finishing — all joints and seals are finished off properly
- Final water test — we test everything before we call the job done
We walk through each step with you so there’s no guessing what’s happening or why.
Shower Leaks in Wollongong's Older Homes
Wollongong has a lot of brick and fibro homes built from the 1960s through to the 1990s, and these turn up a lot in suburbs like Figtree, Fairy Meadow, Woonona, Corrimal, and Dapto. Many of these homes still have their original waterproofing, or waterproofing from an early renovation, and it’s now well past the point it was ever meant to last.
The bathrooms in these homes were often built smaller and with less ventilation than what you’d see in a newer build. Less airflow means more moisture sitting around, and that speeds up the wear on grout, silicone, and the membrane underneath the tiles.
It’s a pattern we see again and again across the Illawarra — a bathroom that looks fine on the surface, but underneath, the waterproofing has quietly been failing for years.
Why Wollongong Homeowners Choose Us for Shower Repairs
When you’re dealing with a leaking shower, you want someone who can get out to you quickly and tell you straight what’s actually going on. We provide fast leaking shower repair across Wollongong and the Illawarra, and we start every job with an honest diagnosis before we talk about a quote.
Our waterproofers and tilers are fully licensed, and every repair is carried out to AS 3740. We don’t cut corners on waterproofing, because we know what happens down the track when it’s done wrong.
We back our work with a workmanship guarantee, so once we’ve fixed your shower, you can stop thinking about it. If you’re noticing any of the signs of a leak in your bathroom, get in touch and we’ll come take a look.
Frequently Asked Questions
The clearest sign is moisture showing up outside the shower itself — things like a damp ceiling below the bathroom, a musty smell, crumbly grout, mould around the silicone, or soft flooring near the shower. Any of these is worth getting checked.
It depends on what’s causing the leak. A simple reseal or tile replacement costs a lot less than a full strip-out and re-waterproofing. We always give you a clear price after we’ve worked out what’s actually going on.
Sometimes, yes. If it’s just a failed silicone joint or a single cracked tile over an intact membrane, we can usually fix it without a full strip-out. If the membrane has failed more broadly, a strip-out is the only way to fix it properly.
A small repair like resealing or replacing a tile can often be done in a day. A full strip-out and re-waterproofing job takes longer, since the new membrane needs time to cure before tiling and finishing can go ahead.
Yes. Any waterproofing work in NSW needs to be done by a licensed waterproofer and to AS 3740. Skipping this can cause problems with your insurance and when you go to sell the house.
The water keeps spreading behind the scenes. It can rot the wall framing, damage the plasterboard, grow mould inside the walls, and damage the subfloor. The longer it’s left, the bigger and more expensive the fix becomes.
A lot of homes in suburbs like Figtree, Fairy Meadow, Woonona, Corrimal, and Dapto were built between the 1960s and 1990s, and many still have their original waterproofing. These bathrooms were also often smaller and less ventilated, which speeds up wear on the grout and membrane.
Get Your Shower Leak Fixed Properly
If something doesn’t feel right with your shower, it’s worth getting it checked sooner rather than later. A small problem behind the tiles doesn’t fix itself, and the longer it sits, the more it spreads into the walls and floor, turning a simple job into a much bigger one.
Bathroom Renovations Wollongong provides leaking shower repair across Wollongong and the Illawarra, covering Figtree, Fairy Meadow, Woonona, Corrimal, Dapto, and surrounding suburbs. We start with an honest diagnosis, use licensed waterproofers and tilers, and carry out every repair to AS 3740. All our work comes with a workmanship guarantee.
Give us a call on 0240036408 for a fast response and a free quote, and we’ll get your shower sorted properly.
