17/08/2026
Today’s site visit was a pretty confronting example of what happens when moisture problems are allowed to continue unchecked. The photos speak for themselves. 😳
Common causes of mould include:�• High indoor humidity�• Condensation on windows, walls and other cold surfaces�• Poor ventilation and limited air movement�• Leaks or water ingress�• Damp subfloors and building cavities�• Everyday moisture from showers, cooking and drying clothes�• Rising damp
Rising damp is particularly destructive. Moisture can travel up through masonry and walls from the ground below, leaving building materials continually damp. Over time, this can contribute to paint and plaster deterioration, damaged walls, musty conditions and mould growth.
That’s exactly the sort of damage we saw on today’s site visit — wet, deteriorating walls with significant mould growth.
These aren’t just walls that need a coat of paint. The underlying moisture problem needs to be addressed.
And this is where understanding the cause matters.
Ventilation can play an important role in managing humidity, improving airflow and helping damp areas dry, but ventilation alone won’t fix rising damp or water ingress. The source of the moisture needs to be identified and rectified as part of the solution.
Cleaning or painting over mould without dealing with the moisture behind it is often only a temporary fix.
Find the moisture. Fix the cause. Improve the ventilation.
At Fresh Ventilation, we’re interested in what’s happening behind the mould — because prevention starts with understanding why it’s there in the first place.
