Shower tiles are one of those things that look great when clean and absolutely terrible when they’re not. If yours are dealing with soap scum, grout discolouration, or that persistent chalky waterline, this guide is for you.
No fancy products. No expensive equipment. Just a practical step-by-step from a Perth tiler who’s seen a lot of bathrooms in a lot of different states.
Why Shower Tiles Are Harder to Clean in Perth
Perth’s Hard Water and Mineral Build-Up on Tiles
Perth tap water is hard. It contains higher levels of calcium and magnesium than most Australian cities. That white, chalky film on your shower tiles? That’s limescale, and it builds up faster here than in softer-water cities like Melbourne or Sydney.
Standard bathroom spray won’t cut through it. You need something with mild acid. White vinegar or a pH-neutral tile cleaner designed specifically for hard water.
Humidity and Mould Growth in WA Bathrooms
Perth summers are dry, but your bathroom is a humid space year-round. Poor ventilation leads to mould growth in grout joints. If you’re not running your exhaust fan during and after showers, mould will keep coming back no matter how often you clean.
How to Clean Shower Tiles Step by Step
Products That Work — and What to Avoid on Tiles
| Product | Use On | Avoid On |
| White vinegar and water (1:1) | Ceramic, porcelain | Natural stone (etches marble) |
| pH-neutral tile cleaner | All tile types | Nothing |
| Baking soda paste | Grout lines | Glazed tile surfaces (too abrasive) |
| Diluted bleach (1:4 with water) | White grout only | Coloured grout, natural stone |
| Harsh scourers | Never use | Everything |
Cleaning Ceramic and Porcelain Shower Tiles
- Wet the surface first
- Apply a pH-neutral cleaner or diluted white vinegar
- Let it sit for 5–10 minutes
- Scrub with a soft non-scratch sponge
- Rinse thoroughly with water
- Dry with a squeegee or microfibre cloth
For stubborn limescale: apply undiluted white vinegar directly, wrap the area in cling film, leave for 30–60 minutes, then scrub. It works surprisingly well on that chalky Perth build-up.
Cleaning Natural Stone and Travertine Tiles Without Damage
Natural stone (marble, travertine, limestone) is porous and sensitive to acid. Never use:
- White vinegar
- Lemon juice
- Bleach
- Any cleaner with a pH below 7
Use only pH-neutral stone cleaner (available at Bunnings and specialty tile stores). Seal natural stone every 12 months, that’s what keeps staining out in the first place.
Cleaning Large Format Tiles — Fewer Joints, Easier Maintenance
Large format tiles have fewer grout lines, which genuinely makes them easier to maintain long-term. The tile surface is usually porcelain. So clean it with any quality pH-neutral cleaner. Focus your effort on the grout lines that do exist, as they collect more grime per line than a small-tile bathroom.
How to Clean Grout in Your Shower
Daily Habits That Prevent Grout Staining
The easiest way to keep grout clean is to stop it staining in the first place:
- Squeegee or wipe down tiles after every shower
- Run the exhaust fan during and for 10–15 minutes after showering
- Reseal shower grout every 12–18 months
Deep Cleaning Discoloured Shower Grout
For grout that’s already stained:
- Make a paste: baking soda and just enough water to form a thick consistency
- Apply to grout lines with an old toothbrush or grout brush
- Leave for 10–15 minutes
- Scrub firmly along the grout line direction
- Rinse thoroughly with warm water
For more stubborn staining: try an oxygenated whitener (like Napisan paste) on white grout. Apply, wait 20 minutes, scrub, rinse.
Mould in Grout — Causes and Safe Removal
Not sure if it’s mould or just staining?
- Mould typically appears at the base of the shower, in corners, and along silicon joints, it’s usually black or dark green
- Even discolouration across all joints is more likely general staining
For mould removal:
- Mix 1 part bleach to 4 parts water (white/light grout only)
- Apply with a brush, leave 15 minutes, rinse thoroughly
- Ventilate well while working
Important: If mould returns within a week or two of cleaning, the problem is likely behind the tiles, which means a waterproofing failure. At that point, stop cleaning and call a tiler.
Grouting and Grout Sealing — Why It Matters Long-Term
How Often Should You Reseal Your Shower Grout?
Grout sealer wears off over time. In a shower, you should reseal every 12–18 months for proper protection.
Signs your grout needs resealing:
- Grout stains quickly after a clean
- Water absorbs into the grout rather than beading off the surface
- Colour has shifted and cleaning alone won’t restore it
Signs Your Grout Needs Replacing, Not Just Cleaning
Some grout problems can’t be cleaned away:
- Cracked or crumbling grout lines
- Missing sections of grout
- Grout that sounds hollow when tapped
- Mould returning within days of cleaning
At this point, you’re looking at regrouting, not cleaning. Done properly by a professional, a regrouting job can extend a tiled shower’s life by many years.
When to Call a Professional Perth Tiler
Cracked, Missing or Hollow Grout — More Than Cosmetic
Cracked grout in a shower isn’t just an aesthetic issue, it’s a waterproofing risk. Water infiltrates behind the tiles, saturates the substrate, and causes:
- Tile delamination (tiles go hollow, then fall off)
- Structural damage to the wall
- Mould growth behind the tile surface
Regrouting vs Full Tile Replacement in Perth
| Issue | Solution | Approximate Cost (AUD) |
| Discoloured grout | Clean and reseal | DIY ~$20–$50 |
| Cracked grout lines | Professional regrouting | $300 – $800 |
| Hollow or loose tiles | Remove and relay | $500 – $1,500 |
| Water damage behind tiles | Full wet area remediation | $3,000+ |
For Professional regrouting and tile repair Perth, get a proper assessment from Tile Solutions WA before a small problem becomes a big one.
Grout That Needs More Than a Clean?
If cracked, missing, or mouldy grout keeps coming back no matter what you do — it’s time for a professional look.
