Common signs that your shower is leaking
Check beyond the shower. Water can travel under tiles, through a wall cavity or along a ceiling, so a mark is not always directly below the entry point. Damage that worsens after showering is a useful clue.
- Cracked, missing or crumbling grout, particularly if it remains dark after drying.
- Silicone that has split, pulled away from a corner, or left a wall-to-floor gap.
- Loose, hollow-sounding or lifting tiles near the shower base or lower wall.
- Water escaping at the shower screen, door seal or floor transition after use.
- Persistent dampness or a musty smell near the bathroom.
Mould alone does not prove a leak. Mould with failed silicone, deteriorated grout or moisture outside the shower needs attention.
Is your shower leaking into the wall? Signs to check
Look in the room on the other side of the shower wall. Bubbling paint, a swollen skirting board or soft plaster can mean moisture has reached the wall lining. A musty smell that returns after cleaning is another sign.
Loose tiles near the floor can point to water behind the tiled surface. For an upstairs bathroom, check for stains, peeling paint or a sagging ceiling patch below. Water can move before it shows, so the tile directly above a stain is not necessarily the source. Keep clear of an unsafe ceiling and arrange an inspection.
Could it be a leaking pipe instead?
A shower enclosure issue often becomes noticeable during or after showering, when water passes through worn grout, failed silicone, screen seals or another surface gap. A plumbing leak can leave a wall or floor damp while the shower is unused. An unexplained water-bill increase, moisture around pipework, or a patch that grows while the shower is dry are reasons to contact a plumber first.
| What you notice | What it may point to | Next step |
|---|---|---|
| Dampness follows shower use | Grout, silicone, screen seals or another surface gap | Arrange a shower assessment |
| Dampness continues while unused | A pipe, fitting or plumbing issue | Arrange a licensed plumber |
| Water escapes outside the screen | Screen seal, door alignment, tray or drainage issue | Contain water while it is assessed |
| Many tiles are loose or water pools | A deeper tile-bed, drainage or membrane issue | Seek an inspection before a surface repair |
More than one issue can exist. A plumber can rule out pipe faults, while a shower specialist can assess joints, sealant and tiled surfaces.
How to check without making the problem worse
Start with observations, not aggressive testing. Take dated photos of damaged paint, grout, silicone and ceiling marks. Note whether the area changes after a shower or while unused.
- Let the shower dry and inspect internal corners, wall-to-floor joints, taps and the shower screen.
- Check that the drain clears and water is not pooling against a wall or outside the shower area.
- Look for gaps where silicone meets tile, the screen or fittings. A new bead over loose silicone is not a reliable repair.
- Avoid drilling or removing tiles, or repeatedly soaking a suspected area to test it.
- If there is water near electrical fittings, ceiling swelling or a substantial leak, stop using the shower and seek professional advice.
What commonly lets water past the tiles
Tiles are not the only barrier against water. Grout lines, flexible silicone joints and waterproofing below the tiles have different jobs. Cement grout can absorb moisture and deteriorate in a wet area. Silicone is used where surfaces meet and move, including corners and wall-to-floor joints.
Cracked grout or failed silicone can allow surface water behind tiles. Regrouting and resealing can address these entry points when the tiled area is sound. They do not replace a failed waterproof membrane, correct poor drainage or repair widespread loose tiles.
Can a leaking shower be repaired without removing tiles?
Often, yes, where water enters through failed grout and silicone and the tiles and substrate remain sound. Deteriorated grout and sealant are removed, then epoxy grout and new silicone are installed where appropriate. Epoxy grout is non-porous and does not need sealing, but it does not replace the waterproof membrane beneath the tiles.
More extensive work may be needed for a failed membrane, damaged shower base, inadequate falls, significant movement, or widespread loose tiles. An assessment should distinguish a surface-joint issue from a deeper one.
What to do next
Reduce water exposure while the cause is assessed. Share shower photos, grout and silicone close-ups, and images of adjoining wall or ceiling damage. See leaking shower repair in Melbourne, shower regrouting, balcony regrouting and our reviews page for related information.
Frequently asked questions
How can I tell if my shower grout is leaking?
Look for cracked, missing or crumbling grout with dampness outside the shower, loose lower tiles or damage that worsens after showering. Grout alone cannot confirm the source because water can also enter through silicone, screen seals or plumbing.
Can a shower leak cause damage on the other side of the wall?
Yes. Moisture can show as bubbling paint, swollen skirting, soft plaster or a musty smell in the adjoining room. Visible damage may be some distance from the entry point.
How do I know whether it is a shower leak or a pipe leak?
Dampness after shower use can point to the enclosure. Dampness while unused, or an unexplained water-bill increase, can point to plumbing. A licensed plumber should investigate a suspected pipe leak.
Will regrouting stop a leaking shower?
It can help when water enters through deteriorated grout and silicone and the tiled surface is sound. It does not replace failed waterproofing below tiles or fix drainage, movement or widespread loose tiles.
Should I stop using a leaking shower?
If there is active leaking, ceiling swelling, water near electrical fittings or worsening damage, stop using it and seek professional advice. Otherwise, limit water exposure and dry the area after use while the cause is assessed.
Send photos for a fixed quote
Send a photo of the whole shower or balcony and a close-up of the grout. We assess the visible condition and explain whether regrouting and resealing are suitable.