Prevention is better than a cure: What landlords need to consider to prevent problems this winter
Claire Pile, Head of Residential Lettings, shares advice on how landlords can prevent mould problems caused by the colder weather.
During the winter months, mould and condensation becomes one of the most frequently reported and costly issues facing landlords. Condensation, damp patches and black mould are not only damaging to properties, they are now firmly in the regulatory spotlight under the Renters’ Rights Act.
With enforcement powers increasing and expectations rising, landlords who fail to manage damp and mould risk far more than unhappy tenants.
The Renters’ Rights Act strengthens tenants’ rights to live in homes that are safe, healthy and fit for habitation. Local authorities now have enhanced powers to intervene where landlords do not maintain acceptable living standards.
At the same time, Awaab’s Law, which introduces strict response times for damp and mould in social housing, is already influencing how the entire private rented sector is judged. In practice, this means that slow or inadequate responses to mould complaints are increasingly likely to lead to enforcement action, reputational damage and financial claims.
What causes mould?
Mould is driven primarily by condensation — when warm, moisture-laden air meets cold surfaces. This is most common during winter, when heating is used intermittently and windows are kept closed.
Everyday activities such as cooking, showering and drying clothes indoors release large amounts of moisture into the air. In properties with limited ventilation, poor insulation or cold external walls, this moisture has nowhere to go and settles on walls, ceilings and windows.
Typical problem areas include window frames, external corners of rooms, behind wardrobes and sofas, and in bathrooms and kitchens.
What are the practical steps landlords should take?
Proactive property management is now essential with out top tips below:
Improve ventilation: Ensure extractor fans are working effectively in kitchens and bathrooms, trickle vents remain open, and consider installing positive input ventilation (PIV) systems in properties with recurring condensation issues.
Upgrade insulation: Double glazing, loft insulation and insulated external walls significantly reduce cold surfaces where condensation forms.
Stay on top of maintenance: Blocked gutters, roof leaks and defective pointing all contribute to damp. Routine inspections and early repairs are far cheaper than dealing with widespread mould.
Support your tenants: Providing simple guidance on heating and ventilation can make a substantial difference. Encouraging steady background heating and the use of extractor fans when cooking or bathing helps prevent moisture build-up.
Respond quickly to mould reports and document your actions: Landlords should treat any report of damp or mould as urgent. Best practice is to make contact within 48 hours, investigate the cause and arrange appropriate remedial works without delay.
Keep an accurate record of the action: It is not more important than ever to document all communication, inspections and details of repairs in addition to any advice you have provided your tenant. If a case is escalated, clear records are often the difference between a resolved complaint and a costly dispute. Failing to act promptly can now result in council enforcement, compensation claims and, in serious cases, restrictions on letting the property.
The bottom line: Mould prevention is no longer just good property management — it is a regulatory and financial necessity.
With the Renters’ Rights Act raising standards across the sector, landlords who take a proactive, professional approach will protect both their investment and their tenants’ wellbeing.
If you would like expert support in managing compliance, inspections as well as winter property readiness, speak to our lettings team today and ensure your portfolio is fully protected this winter.
During the winter months, mould and condensation becomes one of the most frequently reported and costly issues facing landlords. Condensation, damp patches and black mould are not only damaging to properties, they are now firmly in the regulatory spotlight under the Renters’ Rights Act.
