Check where extract air goes

A fan that merely recirculates through a filter does not remove water vapour from the building. Ducted fans need a clear route outside and enough airflow to overcome duct resistance.

Background ventilation affects closed rooms

Modern replacement windows can reduce the incidental leakage older houses once had. Trickle vents or other background openings help provide make-up air so extract systems can work.

Surface temperature is equally important

Even with reasonable ventilation, an uninsulated cold bridge can remain the first place where condensation forms. Heating pattern and insulation details may therefore need attention alongside airflow.

Need help dealing with the cause?

Once the likely moisture source has been narrowed down, MyJobQuote can help you request prices from damp-proofing contractors working in your local area.

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