The only way to kill 100% of mould is by removing all mould-infested materials. While fungicides can kill mould on surfaces, complete removal ensures it cannot return.
Here's why:
- Mould Roots: Mould's hyphae (root-like structures) can penetrate porous materials. Simply killing surface mould leaves the roots intact, allowing it to regrow.
- Spore Dispersal: Even dead mould can release spores, potentially leading to new growth if conditions are favorable.
- Material Degradation: Mould weakens and degrades materials over time. Even if killed, the structural damage remains.
Therefore, the most effective strategy involves a combination of:
- Source Identification: Find the source of moisture that's promoting mould growth. Address leaks, condensation, or humidity issues.
- Removal: Dispose of porous, mould-infested materials like drywall, insulation, and fabrics. Follow proper disposal procedures to prevent spore dispersal.
- Cleaning: Clean non-porous surfaces with a mould-killing cleaner after removing the bulk of the infestation. Ensure proper ventilation.
- Prevention: Take steps to prevent future mould growth by controlling humidity, ensuring proper ventilation, and promptly addressing water leaks.
While fungicides and other biocides can kill mould on surfaces, they don't address the underlying problem of moisture and the presence of mould roots within materials. This is why complete removal remains the only foolproof method to eliminate mould entirely.
