Damp, Mould & Condensation — Why Property Managers Must Act Before Winter
When it comes to winter property complaints, there’s one issue that consistently tops the list: damp, mould, and condensation.
Right now, we’re enjoying the summer months — longer days, warmer temperatures, windows open — but make no mistake, winter is just around the corner. When the cold weather arrives, so do the calls and emails from tenants reporting black mould patches, musty smells, and condensation dripping down the windows.
If you’re a property manager, preparing for this seasonal surge in complaints can save you time, money, and a lot of stress.
The Common Winter Complaints You’ll Hear
The scenarios rarely change:
“There’s black mould in the bathroom/bedroom.”
“The windows are wet every morning.”
“The walls feel damp to the touch.”
These issues may appear cosmetic at first, but they often signal deeper ventilation or insulation problems — and they don’t go away on their own.
Why Winter Makes Damp & Mould Worse
While damp and condensation can happen year-round, winter creates the perfect storm:
Reduced ventilation – Tenants close windows to keep heat in, meaning less fresh air circulation.
Cold external walls – Warm indoor air meets cold wall surfaces, creating condensation.
Indoor clothes drying – Without proper airflow, drying laundry inside adds significant moisture to the air.
In short: colder weather + reduced ventilation + high moisture = a rapid build-up of condensation and mould growth.
The Risks of Ignoring the Problem
This isn’t just about avoiding unsightly patches of mould — the risks are serious:
Health concerns – Prolonged exposure to damp and mould can trigger asthma, worsen respiratory issues, and affect overall wellbeing — especially for children and vulnerable tenants.
Legal implications – Under the Housing Health and Safety Rating System (HHSRS), excessive damp and mould is classed as a Category 1 hazard, requiring urgent attention.
Environmental health complaints – Persistent problems can lead to official investigations and enforcement notices.
Even if a landlord believes the issue stems from “tenant lifestyle,” the law is clear: it is their responsibility to ensure the property’s structure, insulation, and ventilation are adequate.
Proactive Steps for Property Managers Before Winter
Being ready means fewer emergency callouts and happier tenants. Here’s how to get ahead:
Inspect properties now – Check ventilation systems, insulation, and areas prone to mould growth.
Educate tenants – Provide clear, practical guidance on reducing condensation (ventilating rooms, using extractor fans, avoiding over-drying indoors without airflow).
Tackle known problem areas – Address insulation gaps, draught-proofing, and any history of damp before the cold sets in.
Bottom line:
Damp, mould, and condensation are predictable — which means they’re preventable. Addressing them before winter arrives protects your tenants’ health, keeps properties in good condition, and reduces the costly cycle of complaints, callouts, and repairs.
Think of it as winter-proofing not just the property, but your workload.
Our FREE tenants guide below can help to reduce damp and mould in your properties - feel free to send it out.
