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Humidity Control and the Shift to Prevention

04/03/2026

Jenny Danson

James Green of Breathe Pure shares his insights on why damp and mould persist and what a prevention-first model requires. 

Damp and mould continue to affect homes across all tenures, and many responses remain focused on resident behaviour rather than the building’s ability to manage indoor moisture. Evidence across the sector shows that uncontrolled humidity is a consistent factor, driven by modern living patterns, reduced heating and ventilation limitations. 

Older properties often rely on natural ventilation that no longer supports current occupancy levels. New airtight homes can restrict airflow to the point where moisture cannot escape. When heating is reduced due to energy costs, relative humidity increases and condensation becomes more likely. These conditions demonstrate why reactive mould washes or behaviour-based advice rarely resolve the issue. 

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