Damp, mould and condensation: telling them apart, and what has to happen when you report it

If there is mould on your wall, the first thing worth knowing is that reporting it is not an admission of anything. It is how the problem gets fixed, and it is what we would rather you did on the first day you noticed it than on the ninetieth.

The second thing worth knowing is that damp is not one problem. It is at least three, they have different causes and different repairs, and telling them apart is most of the work.

The three kinds of damp, and the mould that grows on all of them#Link to this section, The three kinds of damp, and the mould that grows on all of them

Mould is not a fourth kind of damp. It is what grows once a surface stays wet, whichever of the three made it wet. That is why treating the mould without finding the cause never works for long.

Condensation#Link to this section, Condensation

Warm, moist air meets a cold surface and the moisture comes out of it as water. You see it first on windows in the morning, then on the coldest parts of outside walls — the corners of rooms, behind wardrobes, in unheated bedrooms. It is worse in winter, and worse where a home is hard to heat.

Condensation is often described as the resident’s problem. It usually is not. Persistent condensation in a home someone cannot afford to heat, or that has no working extractor fan, or that is cold because the insulation or the heating is inadequate, is a building problem, and a landlord who answers it with a leaflet about opening windows has not answered it.

Penetrating damp#Link to this section, Penetrating damp

Water getting in from outside. It shows up as a patch rather than a film, it is usually worst during and after rain, and it often sits near the thing that is letting the water in — a window, a roofline, a blocked gutter, a cracked render, a failed seal around a pipe. It does not improve with ventilation, because the water is not coming from inside the room.

Rising damp#Link to this section, Rising damp

Moisture drawn up from the ground through the structure. It is a ground-floor problem, it is fairly constant rather than seasonal, and it tends to stop at a horizontal line with a tidemark and sometimes salt deposits on the plaster. It is the least common of the three and the most often misdiagnosed, which matters because the repair is expensive and pointless if the real cause was a leaking downpipe.

What to do now, in the order that helps#Link to this section, What to do now, in the order that helps

1. Report it. In writing if you can, because a written report is a date you can point at later. A phone call counts too — ask for it to be logged and ask what the reference is.
2. Photograph it, with something in shot for scale, and photograph it again if it spreads. Dated photographs are the single most useful thing a resident can keep.
3. Say who lives there. A baby, a child, an older person, anyone with asthma or another respiratory condition, anyone with a weakened immune system — this changes how urgent the problem is, and it should change how quickly it is dealt with.
4. Keep your own record: when you reported it, who you spoke to, what you were told, what happened next. If the repair goes wrong, this record is your complaint.
5. Do not stop reporting it because you reported it before. A repeat report is not a nuisance. It is evidence that the first repair did not work.

If you live in a Bluebell home, the route and what we do with it are set out in our repairs, damp and mould policy, and the residents page has the ways to reach us.

The law that already applies to your home#Link to this section, The law that already applies to your home

The Homes (Fitness for Human Habitation) Act 2018 put a term into most residential tenancies: the home must be fit for human habitation when the tenancy starts and must stay fit throughout it. Fitness is judged against the factors in section 10 of the Landlord and Tenant Act 1985 — which include damp, ventilation, repair and stability — plus the prescribed hazards under the Housing Health and Safety Rating System.

What makes it unusual is the enforcement. A tenant can take the landlord to the county court directly, for an order requiring the work and for damages. No council has to be involved and no regulator has to agree. The Act has exceptions — unfitness the tenant caused, acts of God, and where the landlord cannot get a third party’s consent for the work — but it applies to tenancies rather than licences, and where somebody in a Bluebell home holds a tenancy it is the duty with real teeth.

Separately, your council’s environmental health team can inspect the property under Part 1 of the Housing Act 2004 and serve an improvement notice or a prohibition order on the landlord. That system was reformed in 2026: new statutory operating and enforcement guidance was published on 23 June 2026, the list of hazards was reduced from 29 to 21, and the old A–J bands were replaced by Low, Medium and High scores.

Awaab’s Law — what it says, and who it binds#Link to this section, Awaab’s Law — what it says, and who it binds

Awaab Ishak was two years old when he died after prolonged exposure to mould in his family’s home. His family had reported it. Awaab’s Law is the response, and it is the reason this post begins the way it does.

It works by implying a term into social housing tenancy agreements requiring the landlord to meet prescribed timescales. The duties are in the Hazards in Social Housing (Prescribed Requirements) (England) Regulations 2025. Phase 1 came into force on 27 October 2025 and covers every emergency hazard plus damp and mould presenting a significant risk of harm. Phase 2 comes into force on 30 November 2026 and extends the same timescales to excess cold and heat, falls, structural collapse, fire and explosion, electrical hazards and hygiene and pests. A third phase covering the remaining hazards is planned for 2027; we have not been able to confirm a date for it, so we are not publishing one.

Where it applies, this is the scheme:

• Investigate within 10 working days — or within 24 hours if it is an emergency hazard.
• Give the resident a written summary of what the investigation found, within 3 working days of the investigation concluding.
• Make the hazard safe within 5 working days of the investigation concluding — or within 24 hours if it is an emergency hazard.
• Begin any further work within 5 working days, or as soon as reasonably practicable, with a 12-week backstop.
• If the work cannot be done within the remediation period, offer suitable alternative accommodation at the landlord’s own expense, for everyone in the household.

The trigger is a hazard presenting a significant risk of harm — meaning one a reasonable landlord with the relevant knowledge would make safe as a matter of urgency. An emergency hazard is one they would make safe within 24 hours. There is no square-metre test, no colour test and no size threshold anywhere in the Regulations, and you should treat any landlord who quotes one at you with suspicion.

Those four claims all appear on housing websites, including the site this one replaced. They are wrong. What Awaab’s Law actually gives a social tenant is a term in their tenancy agreement, enforceable in the county court like any other broken promise in a contract.

Does Awaab’s Law apply to a Bluebell home?#Link to this section, Does Awaab’s Law apply to a Bluebell home?

Not today. Awaab’s Law binds registered providers of social housing — housing associations and local authorities. Bluebell is not a registered provider, so the law does not bind us, and a provider like us claiming to be "Awaab’s Law compliant" is claiming a status that does not exist. The Renters’ Rights Act 2025 provides for the scheme to be extended to the private rented sector, but the timescales are still subject to consultation and no commencement date has been set.

It also applies only where a home is let under a tenancy. Accommodation occupied under a licence is outside it entirely — which is one of several reasons the difference between a tenancy and a licence is worth understanding rather than skipping.

Whether Bluebell adopts those timescales as its own internal standard is a commitment that has to be written down and measured before it can be published. It is not published here, and we would rather say that than imply a promise nobody is counting.

If you report it and nothing happens#Link to this section, If you report it and nothing happens

Make it a formal complaint rather than another repair report. A complaint starts a different process with its own stages and its own deadlines, and it creates the record that everything after it depends on — how to complain, and what has to happen next sets that out. You can also ask your council’s environmental health team to inspect, and that route does not depend on your landlord agreeing to anything.

And if anyone in the home is unwell, tell your GP that there is mould in the property and ask for it to go in your notes. That is a medical record, made at the time, by someone independent of your landlord.