Can a Landlord Blame Condensation for Damp and Mould?
Tenants experiencing damp and mould are frequently told that the problem is caused by condensation or the way they are living in the property.
They may be advised to open windows, avoid drying clothes indoors, keep the heating on and wipe down affected walls. In some cases, that advice is sensible and forms part of the solution.
However, simply describing a damp and mould problem as “condensation” does not establish who is responsible for it.
Condensation describes a physical process: moisture in the air turns into water when it meets a sufficiently cold surface. The more important question is why those surfaces are becoming cold or why excessive moisture is building up in the property.
The important questions include:
- Why are the walls or windows so cold?
- Is the property adequately heated and insulated?
- Does the kitchen or bathroom have effective extraction?
- Are windows, vents and heating systems working?
- Is water entering through the roof, walls or pipework?
- Has the landlord properly investigated?
- Are there defects, disrepair or design problems within the landlord’s control?
- Has the tenant been given realistic advice and support?
Government guidance is explicit that damp and mould should not be dismissed as a lifestyle issue. Landlords should identify the underlying causes and implement lasting solutions rather than attributing responsibility to tenants without a proper investigation.
In this guide, our Housing Disrepair team explains how the law has developed and why explains when condensation may be linked to problems with the property, what landlords are required to investigate, the evidence tenants should keep and when persistent damp and mould may give rise to a housing disrepair claim.
Related guide: If you are experiencing damp and mould in a council or housing association property, read our guide to ‘Damp and Mould in Social Housing: Who Is Responsible? for more information about landlords’ responsibilities and tenants’ rights.
Can A Landlord Say Damp and Mould Are Caused by Condensation?
A landlord may identify condensation as the immediate mechanism producing mould, but that does not automatically remove the landlord’s legal responsibility.
The landlord may still be responsible where condensation is caused or materially worsened by:
- inadequate ventilation;
- a faulty or absent extractor fan;
- defective windows;
- insufficient fixed heating;
- cold bridging;
- inadequate insulation;
- water penetration;
- leaking pipes;
- defective roofing or guttering;
- damp building materials;
- a property that is otherwise unfit for habitation.
A tenant may also contribute to excess moisture, but responsibility is not always all or nothing. The condition of the building and the way it is occupied may both require consideration.
What Causes Condensation?
Air can hold water vapour. Warm air generally holds more moisture than cold air.
When moist air meets a surface below the relevant dew-point temperature, some of that
moisture condenses into liquid water. Repeated condensation can dampen plaster, paint, sealant, furnishings and window frames, creating conditions in which mould can grow.
Common sources of indoor moisture include:
- cooking;
- bathing and showering;
- breathing;
- drying clothes;
- boiling water;
- using unvented appliances.
These are ordinary domestic activities. A home should be capable of accommodating reasonable everyday occupation without becoming persistently damp and mouldy.
The Government’s current damp and mould guidance recognises condensation alongside penetrating, rising and traumatic damp. It states that landlords remain responsible for addressing damp and mould irrespective of its type and should work with appropriately qualified professionals to investigate and resolve it.
Condensation Does Not Automatically Mean the Tenant Is at Fault
It is a mistake to treat the words “condensation” and “tenant behaviour” as interchangeable.
Condensation may arise because:
- an extractor fan has failed;
- there is no mechanical extraction;
- trickle vents are missing or blocked by paint;
- windows cannot be opened safely;
- the heating system is inadequate;
- external walls are poorly insulated;
- thermal bridges create unusually cold internal surfaces;
- the property is overcrowded;
- the layout makes ventilation difficult;
- a structural leak has increased the moisture load;
- fuel poverty makes continuous heating unaffordable.
A landlord must consider the condition and performance of the property, not simply issue generic leaflets about opening windows.
What Legal Responsibilities Does a Landlord Have for Damp and Mould?
Several overlapping legal duties may apply.
The exact claim depends on the tenancy, the landlord, the nature of the defect, notice and the evidence.
Section 11 of the Landlord and Tenant Act 1985
Section 11 of the Landlord and Tenant Act 1985 generally requires landlords of qualifying tenancies to keep in repair:
- the structure and exterior;
- installations for water, gas and electricity;
- sanitation installations;
- installations for space heating and hot water.
This can apply where mould or condensation is associated with defects such as:
- leaking roofs;
- defective gutters;
- damaged external walls;
- faulty windows;
- leaking pipes;
- broken heating;
- defective sanitary installations.
Section 11 is primarily a repairing obligation. It does not automatically require every improvement that might make a property better.
Notice is often important. A landlord will usually need to know, or have sufficient information placing it on enquiry, before it can be criticised for failing to remedy an internal defect within a reasonable time.
Fitness For Human Habitation
The Homes (Fitness for Human Habitation) Act 2018 inserted and expanded provisions within the Landlord and Tenant Act 1985 requiring many rented homes to be fit for human habitation throughout the tenancy.
Fitness is broader than repair.
A property can potentially be unfit even where no individual component is technically “broken”. Relevant considerations include:
- damp;
- internal arrangement;
- natural lighting;
- ventilation;
- water supply;
- drainage and sanitation;
- facilities for preparing food;
- prescribed hazards under the Housing Health and Safety Rating System.
This distinction is particularly important in condensation cases. If persistent mould results from inadequate ventilation, insulation or the inherent design of the property, the tenant may have a fitness claim even if the landlord argues that there is no conventional disrepair.
The Government’s current HHSRS tenant guidance confirms that courts can order landlords to remedy defects or health and safety problems and can award compensation where homes are unfit.
The Housing Health and Safety Rating System
The HHSRS is a risk-based system under Part 1 of the Housing Act 2004.
It does not simply ask whether something is broken. It considers the risk of harm arising from deficiencies within the dwelling.
Damp and mould growth is one of the housing hazards assessed. An inspection may consider:
- the extent and location of the mould;
- the likelihood of exposure;
- the age and vulnerability of occupiers;
- heating;
- insulation;
- ventilation;
- the building fabric;
- the severity of potential harm.
Under the updated 2026 enforcement framework, local authorities must take enforcement action where they identify a Category 1 hazard and have powers in relation to Category 2 hazards.
Different procedures may apply where the local authority itself is the landlord, but council and housing-association tenants can use their landlord’s complaint procedure and may complain to the Housing Ombudsman where the response is inadequate.
What Does Awaab’s Law Mean for Damp and Mould?
Awaab’s Law applies to social landlords in England and introduces fixed requirements for investigating and addressing specified hazards.
Phase 1 came into force on 27 October 2025. It covers:
- all emergency hazards; and
- damp and mould hazards presenting a significant risk of harm.
The requirements include investigation, written information, relevant safety work and, where necessary, suitable alternative accommodation within the applicable regulatory framework.
Phase 2 is currently scheduled to come into force on 30 November 2026 and will extend the significant-hazard requirements to further categories, including excess cold and heat, falls, structural collapse, fire, electrical hazards, explosions and hygiene hazards.
Awaab’s Law does not mean every patch of surface mould automatically falls within its most urgent provisions. The hazard must meet the relevant significant or emergency threshold and arise from matters within the social landlord’s responsibility and control.
However, it reinforces the principle that serious damp and mould reports require prompt, evidence-based investigation rather than unsupported assumptions about tenant behaviour.
Does Awaab’s Law Apply to Private Landlords?
The current Awaab’s Law regulations apply to the social rented sector in England.
Private tenants remain protected by other legal duties, including:
- the Landlord and Tenant Act 1985;
- the Homes (Fitness for Human Habitation) provisions;
- the Housing Act 2004 and HHSRS enforcement;
- contractual obligations;
- relevant local authority enforcement powers.
The practical and legal response therefore depends partly on whether the landlord is a council, housing association or private landlord.
What Should a Landlord Investigate When Damp and Mould Is Reported?
A proper damp and mould investigation should go beyond looking at the wall and describing the staining as condensation.
Depending on the circumstances, the landlord or its professional may need to consider:
- moisture readings;
- internal humidity;
- surface temperatures;
- external wall construction;
- insulation;
- cold bridging;
- roof and gutter condition;
- plumbing;
- heating performance;
- extractor fan operation;
- ventilation paths;
- window condition;
- signs of penetrating damp;
- the pattern of mould growth;
- occupancy and vulnerability;
- previous repairs and reports.
The Government’s guidance recommends treating tenants with respect, gathering information about the property and occupants, identifying the source of the damp and mould, addressing underlying defects and checking that interventions have worked.
Is a Mould Wash Enough to Deal with Damp and Mould?
Sometimes a mould wash is a useful short-term treatment. It can remove surface growth and reduce immediate exposure.
It is not normally a complete solution where the underlying cause remains.
If mould is caused by a defective fan, cold bridge, leak or inadequate heating, cleaning the surface without addressing that cause may simply lead to recurrence.
A suitable repair plan might require:
- fixing leaks;
- renewing or repairing extraction;
- installing appropriate ventilation;
- repairing heating;
- insulating cold surfaces;
- replacing damaged plaster;
- treating affected materials;
- redecorating with appropriate products;
- monitoring after completion.
Repeated mould washes can become important evidence that the landlord knew the problem was recurring but failed to implement a lasting remedy.
What If My Landlord Says I Do Not Open the Windows?
Tenants should use heating and ventilation reasonably where they can.
However, a landlord should not rely on generic advice without considering whether:
- windows open properly;
- opening them creates a security risk;
- outside noise or pollution makes continuous ventilation unrealistic;
- the tenant has young children or disabilities;
- the property can be kept warm at an affordable cost;
- mechanical extraction is available;
- advice is consistent with the actual building design.
Opening windows may reduce humidity temporarily. It does not repair a leaking roof, defective extractor fan, failed heating system or uninsulated external wall.
What If I Dry Clothes Indoors?
Drying clothes indoors adds moisture to the air. That does not necessarily end a claim.
The relevant issues include:
- whether there is a practical alternative;
- whether a drying facility has been provided;
- whether the property has adequate extraction;
- whether the mould is proportionate to normal occupation;
- whether building defects materially contribute;
- whether the landlord’s recommended measures are realistic.
A court may consider evidence of tenant conduct when deciding liability, causation or damages. However, a landlord cannot automatically avoid responsibility simply by showing that ordinary household activities produce moisture.
Can The Landlord Blame Overcrowding?
A high number of occupants can increase moisture production.
The landlord must still consider why the property is occupied at that level, whether the occupancy is authorised, whether ventilation and heating are adequate and whether the property contains defects within its control.
Overcrowding may be a separate HHSRS hazard. It should not be used as a convenient explanation that prevents investigation of other causes.
What Evidence Should I Keep for a Damp and Mould Claim?
Evidence is often decisive because damp and mould can fluctuate with weather, heating and recent cleaning.
Keep:
- dated photographs and videos;
- repair-report confirmations;
- complaint correspondence;
- reference numbers;
- inspection reports;
- texts and emails;
- notes of telephone calls;
- records of missed appointments;
- photographs showing recurrence after mould washing;
- receipts for damaged belongings;
- energy bills where inadequate heating is relevant;
- medical evidence where health effects are alleged;
- evidence that fans, windows or heating do not work;
- humidity or temperature records, where available.
Photograph both close-up mould and wider room views so the location and scale can be understood.
Do not clean solely to preserve evidence where that would create a health risk. Take clear photographs first, then follow appropriate safety advice.
For further practical advice, read our guide to ‘How to Gather Evidence for a Housing Disrepair Claim’, for more information.
Do I Need an Independent Damp and Mould Expert?
Not every complaint requires a privately commissioned report.
An independent expert may become necessary where:
- the landlord denies any defect;
- the cause is disputed;
- repairs have repeatedly failed;
- court proceedings are contemplated;
- the scale of the work requires technical specification;
- the landlord’s report is incomplete;
- there are conflicting professional opinions.
An expert should be appropriately qualified and understand that evidence for court must comply with the Civil Procedure Rules.
Tenants should obtain legal advice before commissioning expensive evidence because the cost may not always be recoverable.
Can I Make a Housing Disrepair Claim If My Landlord Blames Condensation?
Potentially, yes.
A claim may succeed where the evidence shows that the landlord breached a repairing obligation or allowed the property to remain unfit and that the breach caused loss.
A viable claim commonly requires evidence of:
- a relevant defect or condition;
- legal responsibility;
- notice, where required;
- failure to act within a reasonable or prescribed period;
- causation;
- the effect on the tenant;
- any financial losses.
The mere presence of mould is not enough to determine the outcome. Equally, a landlord’s use of the word “condensation” is not a complete defence.
What Can You Claim for Damp and Mould?
Depending on the claim, the court may:
- order repairs or remedial work;
- declare that the landlord is in breach;
- award general damages for inconvenience and loss of enjoyment;
- award proven special damages;
- deal with legal costs.
Compensation is not calculated through a single fixed tariff.
Relevant factors may include:
- the severity of the conditions;
- the number of rooms affected;
- the length of the actionable period;
- the rent;
- how the property could be used;
- the tenant’s vulnerability;
- the landlord’s response;
- whether access was provided;
- the quality and timing of repairs.
Personal injury is a separate head of claim requiring appropriate medical and causation evidence. A tenant should not assume that the existence of mould alone proves that a particular illness was caused by the property.
Can I Stop Paying Rent Because of Damp and Mould?
Generally, tenants should continue paying rent. Withholding rent can lead to arrears and may expose the tenant to possession proceedings.
The existence of disrepair does not ordinarily give a tenant an automatic right to stop paying.
Any proposal to set off damages or use rent for repairs should only be considered after specific legal advice.
What If My Landlord Says I Refused Access for Repairs?
Access records can be highly important.
Tenants should normally cooperate with reasonable inspection and repair appointments, subject to proper notice and legitimate concerns.
If an appointment is unsuitable:
- respond promptly;
- explain why;
- suggest alternatives;
- keep the correspondence;
- confirm that access is not being refused outright.
A landlord may have a defence for periods when it could not carry out work because reasonable access was withheld. Conversely, unsupported allegations about access may be undermined by written evidence showing the tenant repeatedly offered appointments.
What Should I Do If Mould Comes Back After Repairs?
Report it again promptly and provide updated photographs.
Explain:
- when the work was completed;
- when the mould returned;
- whether the same areas are affected;
- whether extraction, heating or leaks remain defective;
- whether decorations are deteriorating;
- how the condition is affecting the household.
A repair is not necessarily adequate merely because a contractor attended. The relevant question is whether the underlying problem was properly resolved.
What to Do If Your Landlord Keeps Blaming Condensation
Condensation is a scientific description, not a legal conclusion.
A landlord is entitled to investigate how a property is being occupied and may provide sensible advice about heating and ventilation. It must also investigate whether defects, disrepair, inadequate extraction, poor insulation or other matters within its responsibility are causing or worsening the problem.
Tenants should report damp and mould early, preserve evidence and cooperate with reasonable inspections. Where the landlord repeatedly treats the surface but fails to identify and repair the underlying cause, a complaint, enforcement action or housing conditions claim may be appropriate.
The central question is not simply whether condensation exists. It is why it exists, whether the home can cope with reasonable occupation and whether the landlord has fulfilled its legal obligation to provide a safe, repaired and habitable property.
Need Help with a Damp and Mould Issue?
If your landlord continues to blame condensation or your lifestyle without properly investigating persistent damp and mould, you may be able to take further action.
At MJV Solicitors, we help tenants with housing conditions claims involving damp, mould, inadequate ventilation, defective heating, leaks and other problems that landlords have failed to properly investigate or repair.
We can assess the circumstances of your case, explain your landlord’s responsibilities and advise whether you may be entitled to repairs and compensation.
- Call us on 01253 858231
- Visit our website for more information about how to start your claim for Housing Disrepair
Related Damp, Mould and Housing Disrepair Guides
Damp and Mould in Social Housing: Who Is Responsible?
Why Damp and Mould Claims Are Increasing in England
How Does Housing Disrepair Affect Your Health and What Can You Do?
How to Gather Evidence for a Housing Disrepair Claim
What Makes a Property Unfit for Human Habitation?
What is Housing Disrepair? A Guide for Council and Housing Association Tenants
Frequently asked questions about condensation, damp and mould
Is condensation always the tenant’s fault?
No. Condensation can result from ordinary household activity combined with inadequate heating, ventilation, insulation or building defects.
Does my landlord have to provide an extractor fan?
There is no universal rule that every older property must contain a particular fan. However, missing or defective extraction may be relevant to fitness, hazard assessment, building standards and the cause of persistent mould.
Can I claim if the landlord keeps sending mould-wash contractors?
Potentially. Repeated washing may demonstrate that the landlord knew the mould was recurring. A claim will still depend on the cause, legal duty and evidence.
What if the landlord’s surveyor says there is no leak?
The absence of a leak does not prove that the property is fit. Condensation may still be linked to inadequate extraction, heating, insulation or cold bridging.
Does the landlord have to redecorate after repairing damp?
Where decorations were damaged by a breach or need to be disturbed to complete proper repairs, making good and redecoration may form part of the necessary remedial works. The precise responsibility depends on the tenancy and facts.
Can I complain to the council about a private landlord?
Yes. A private tenant can ask the local housing authority to consider inspecting the property under the HHSRS. The authority must act on Category 1 hazards and has powers regarding Category 2 hazards.
Can I contact the Housing Ombudsman?
Council and housing-association tenants may use the Housing Ombudsman after following the applicable complaint process. Private landlord complaints normally follow different routes.
Does Awaab’s Law guarantee compensation?
No. Awaab’s Law creates enforceable obligations for social landlords, but compensation will depend on breach, loss and the remedy pursued.
What if mould affects a child or vulnerable adult?
Tell the landlord about the vulnerability and provide relevant information. Government guidance recognises that children, older people and those with certain health conditions may face greater risks from damp and mould.
How quickly must my landlord act?
Urgency depends on the severity of the risk, the landlord type and the legal framework. Social landlords must comply with Awaab’s Law where the relevant emergency or significant-hazard threshold is met. Other repairs must generally be investigated and remedied within a reasonable time after notice.
