Bathroom Mould: When Cleaning Isn't Enough
Mould in bathroom tile joints is unsightly and unhealthy. While professional biocide treatment cleans surface mould, persistent re-growth often indicates underlying moisture or waterproofing challenges.
Surface Mould vs Structural Waterproofing Defects
It is important to distinguish between surface mould growth and underlying structural water leaks:
Surface & Joint Mould (Cleanable)
Mould growing on top of sealed tile surfaces, silicone edges, or outer grout joints caused by high humidity and soap residue. This mould is safely eliminated using professional biocide steam treatment and silicone replacement.
Under-Tile Substrate Moisture (Requires Building Assessment)
When waterproofing membranes behind shower walls fail, water gets trapped inside wall cavities and subfloors. While surface biocides sanitize the outer tiles, ongoing water leaks will push moisture back out through the grout line. In these cases, broader plumbing or tiling repairs may be recommended alongside surface restoration.
Our Honest 3-Step Assessment Approach
- 1Surface & Joint Inspection: We evaluate grout porosity, silicone elasticity, and surface mould depth.
- 2Deep Biocide Clean & Re-seal: We strip damaged silicone, apply hospital-grade biocides, steam clean, and re-seal.
- 3Honest Recommendations: If waterproofing failure is detected, we advise you immediately rather than taking your money for temporary cosmetic fixes.
Need Professional Help With Your Grout?
Our technicians deliver deep steam extraction, biocide mould removal, and long-lasting grout sealing across Melbourne.
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