Mould After Flooding — What to Do Next

Mould can begin to grow within 24–48 hours of flooding. Acting quickly protects both your home and your health.

First 48 hours

Remove standing water, increase airflow, run dehumidifiers, and discard porous items that stayed soaked. The faster everything dries, the lower the mould risk.

When to call a professional

If mould covers more than a small area, keeps returning, or is inside walls and HVAC, professional remediation is the safer route.