Winter Condensation: Why Mould Gets Worse in Cold Weather
Why condensation and mould get worse in winter, where to look, the small changes that help, and when it points to a bigger problem.
The healthy home library
Practical articles on mould and damp in UK homes. Health, housing and cost information was last reviewed in September 2026.
A little clarity.
A healthier home.
Essential reading for UK homeowners dealing with mould
Why condensation and mould get worse in winter, where to look, the small changes that help, and when it points to a bigger problem.
When cleaning mould yourself stops being enough: large areas, recurring growth, leaks, higher-risk households and damaged materials.
Landlord duties on damp and mould in England, Scotland and Wales, including Awaab’s Law timescales, and what tenants should do.
10 articles on mould and damp
Sealing up a home keeps the heat in, but also moisture and radon unless it has enough ventilation. What to check before and after insulation, new windows or draught-proofing.
Loft mould comes from a leaking roof or from moist air condensing on cold timber. How to tell which, and the order to fix things in.
Why condensation and mould get worse in winter, where to look, the small changes that help, and when it points to a bigger problem.
When cleaning mould yourself stops being enough: large areas, recurring growth, leaks, higher-risk households and damaged materials.
How damp and mould can affect health, who is most at risk, and what to do, based on the UK government’s health guidance.
Landlord duties on damp and mould in England, Scotland and Wales, including Awaab’s Law timescales, and what tenants should do.
Why period houses get damp and mould, the common causes, and how to avoid paying for the wrong fix.
Simple habits, a working extractor fan and early cleaning: how to keep bathroom mould at bay, and when the room itself is the problem.
Typical UK prices for mould removal and damp surveys, what pushes costs up, and how to avoid paying twice.
Why new, airtight homes can get mould, what you can do about ventilation, and when to contact the builder.