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UK Winter Forecast: Damp Homes Risk Mould Growth
3 Dec, 2025
Summary
- Winter exacerbates bathroom humidity, increasing mould risk.
- Cold weather reduces ventilation, trapping moisture indoors.
- Mould can damage property and cause health issues.
As winter weather grips the UK, with temperatures predicted to plummet, households face an increased threat from bathroom humidity. The common practice of sealing homes tightly against the cold exacerbates the problem, creating an environment ripe for condensation.
Without adequate ventilation, the moisture from daily routines can accumulate on surfaces like mirrors, tiles, and painted walls. Over time, this persistent dampness can foster the growth of black mould spots, leading to unpleasant musty odours and potential damage to plaster and grout.
In more severe instances, the spread of mould can compromise indoor air quality, posing significant health concerns for individuals with asthma or allergies. Preventing this damp-related decay requires careful management of ventilation, even during the coldest months.
