Back to Advice Centre
Leaks & Repairs
Leaking Shower: The 5 Signs Every Brisbane Homeowner Should Know
25 March 2026 5 min read
Shower leaks are Brisbane's most under-diagnosed water damage cause. By the time you see obvious signs, wall frames are often already rotting.
1. Loose or Drummy Tiles
Tap tiles gently — if they sound hollow near the floor waste, water is under them.
2. Peeling Paint on the Other Side
The wall backing the shower is the tell. Bubbling, peeling or musty smell = shower membrane failure.
3. Silicone Mould Won't Die
If mould keeps coming back within days of cleaning, water is behind the silicone, feeding it.
4. Warped Skirting
Bathroom skirting boards swelling from the bottom means water is running along the floor.
5. Rising Water Bill With No Cause
Combine with a meter test — a leaking shower waste can run for hours.
Frequently Asked Questions
Can shower leaks be sealed without re-tiling?
Yes — internal epoxy sealants (like MEGASEALED) work when the membrane failure is at grout joints and the floor waste is intact.