Service

Damp and mould

Damp and mould traced to its cause, fixed at source and reported in writing: the evidence landlords need under Awaab's Law, and a healthier home to live in.

Treat the cause, not just the stain

Wiping mould off a wall makes it disappear for a while. Unless the cause is fixed, it comes back, often worse than before. We find out why the damp is there, put that right first, and only then treat and redecorate.

Four causes, four different fixes

Damp usually comes down to one of four things: condensation, penetrating damp, rising damp or a leak. Condensation needs better ventilation and heat, penetrating damp means repairing the roof, gutters, pointing or render, and a leak needs tracing and fixing. True rising damp is rarer than it is often made out to be, so we check for bridged damp-proof courses and high ground levels before recommending anything more invasive.

A proper diagnosis

We inspect the whole property, not just the room with the mould. We take moisture readings, check the heating, ventilation and extraction, look at the roof, gutters and walls from outside, and ask the people who live there when and where the problem appears. Then we explain what we found in plain English.

Remediation, not a repaint

Depending on the cause, the fix can include extractor fans, trickle vents or a positive input ventilation (PIV) unit, repairs to roofs, gutters, brickwork and plumbing, or insulation where cold surfaces are the problem. Affected areas then get a mould wash and stain-block treatment before they are made good and redecorated. Our own multi-trade teams carry out this work, so the fix does not stall while you wait for another contractor.

Evidence your team can act on

Since 27 October 2025, Awaab's Law has required social landlords in England to investigate damp and mould hazards and act on them within set timescales. We plan our visits around the timescales in your policy, and every case ends with a written report: what we found, the moisture readings and photographs, what we did and anything that should be monitored. It is the record you need when a resident, the ombudsman or the regulator asks what was done.

For homeowners and private landlords too

Damp is not only a social housing problem. If you own your home or let a property privately, we will diagnose the cause, give you a written report and an itemised quote, and fix it with the same care. We protect floors and furniture, control dust and leave every room clean.

What's included

Damp and mould inspections and diagnosis
Moisture readings and photographic records
Written reports for landlords and homeowners
Extractor fans and trickle vents
Positive input ventilation (PIV) units
Tracing and fixing leaks
Roof, gutter and downpipe repairs
Repointing, render and brickwork repairs
Rising damp repairs, from clearing bridged damp-proof courses to replastering
Insulation to cold walls and ceilings
Mould wash and stain-block treatment
Replastering, making good and redecoration
Follow-up inspections where your policy requires them

How it works

01
Report it
Call the office, message our 24-hour WhatsApp line or instruct us through your usual works order route. Photos of the problem help us come prepared, and we confirm the appointment with whoever lives there.
02
Inspect and diagnose
We inspect the whole property, take moisture readings and photographs, and pin down the cause: condensation, penetrating damp, rising damp or a leak.
03
Findings and price
You receive a written summary of what we found and what we recommend, with an itemised quote or a price against your schedule of rates.
04
Fix the cause
Our teams carry out the repairs and ventilation improvements first, from roof and gutter work to extractor fans or a PIV unit.
05
Treat and redecorate
Affected surfaces get a mould wash and stain-block treatment, then are made good and redecorated, with floors and furniture protected throughout.
06
Report and aftercare
A closing report records the work, the readings, the photographs and anything to monitor. Our two-year workmanship guarantee covers the work we carried out.

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Questions we are often asked

What causes damp and mould in a home?

Damp and mould usually come from one of four things: condensation from everyday moisture in a poorly ventilated home, penetrating damp from defects such as leaking roofs, gutters or pointing, rising damp from the ground, or a plumbing leak. Each needs a different fix, which is why the cause should be diagnosed before any treatment.

What does Awaab's Law mean for social landlords?

Awaab's Law, introduced through the Hazards in Social Housing (Prescribed Requirements) (England) Regulations 2025, has applied to damp and mould since 27 October 2025. It requires social landlords to investigate reported hazards, tell residents what they found and put things right within set timescales. AGL supports landlords by diagnosing the cause, carrying out the remediation and providing a written record of every case.

Will mould come back after it has been treated?

Mould returns when only the surface is treated. We fix the cause first, whether that means better ventilation, a repair to the building or insulation to a cold wall, then treat and redecorate, and our report sets out anything that should be monitored.

Do you provide a written damp and mould report?

Yes. Every AGL inspection ends with a written report covering what we found, the moisture readings and photographs and the work we recommend, followed by a record of what we did. Landlords use it as their record for the case, and homeowners get a clear explanation before they spend anything.

Is damp and mould harmful to health?

Damp and mould can affect health, particularly for children, older people and anyone with a respiratory condition or a weakened immune system. That is why it should be diagnosed and dealt with properly rather than painted over.

Do you fix damp and mould for homeowners?

Yes. AGL inspects, diagnoses and fixes damp and mould for homeowners and private landlords across Greater London, with a written report, an itemised quote and our two-year workmanship guarantee on the work we carry out.