Damp and mould surveys
If mould keeps coming back, or you're not sure whether it's condensation or water getting in, a survey tells you what's actually wrong before you spend money on fixing it.
Scotland Mould Removal is a matching service, not a surveyor. We pass your enquiry to one independent specialist covering your area.
When a survey is worth paying for
- Mould has come back after cleaning more than once.
- There's damp low on the walls, a tide mark, or salts coming through the plaster.
- You've been quoted for an expensive treatment, such as a chemical damp-proof course or tanking, and want to be sure it's needed.
- You're a landlord and a tenant has reported damp or mould. Since 6 October 2026 Scottish law requires an investigation within 10 working days.
- You're buying, and the Home Report flagged damp for further investigation.
What the surveyor looks at
Damp has four common sources, and a survey is mostly a process of telling them apart.
Condensation
Signs are mould in cold corners and on window reveals, streaming windows in the morning, and readings that are high at the surface but lower deeper in the wall. Some surveyors leave a humidity logger for a few days to see how the home is used.
Penetrating damp
Water coming in from outside, through defective rhones and downpipes, cracked render, failed pointing, a leaking roof, or around windows. Patches often get worse after heavy rain and may sit near a particular downpipe or under a valley in the roof. Stone tenements and older houses are prone to it.
Leaks
Plumbing leaks, failed shower seals and water from a flat above. These tend to produce a patch in one place with clear edges.
Rising damp
Ground moisture drawn up a wall, usually leaving a band up to around a metre high with salts in the plaster. It's the most often diagnosed and probably the most often misdiagnosed. A raised ground level outside, a bridged damp-proof course, or a leaking pipe can all look similar.
What the report should tell you
- where the damp or mould is, with photos and moisture readings
- what the surveyor thinks is causing it, and the evidence for that
- what work is needed, in what order, and roughly what it costs
- anything that needs a different trade, such as a roofer or plumber
- for shared buildings, which parts are common repairs that the other owners will need to agree to
For landlords, a clear report also makes it easier to write the summary tenants must now be given. See our landlords page for more on that.
What happens next
Once the cause is known, the fix might be a simple ventilation change, a repair to the outside of the building, or a full mould removal and replastering job. If it's condensation, our page on condensation and ventilation fixes explains the usual options.
Common questions
Is a damp survey the same as a home report?
No. The Home Report surveyor may note signs of damp and recommend further investigation, but they don't usually investigate the cause in depth. A damp and mould survey is a closer look at one problem.
Will the surveyor try to sell me a damp-proof course?
Some firms that do surveys also sell treatments, so it's fair to ask how they reached their diagnosis. A good report explains the evidence for each finding. If rising damp is diagnosed, you can ask what other causes were ruled out.
As a landlord, does a survey count as an investigation under Awaab's Law?
The Scottish rules require an investigation by a competent person within 10 working days, and a written summary for the tenant. A survey by a qualified specialist can form that investigation. Check the Scottish Government's guidance for what the written summary must include; our Awaab's Law guide links to it.
How long does a survey take?
A survey of one or two problem areas in a flat often takes an hour or two on site. A whole house takes longer. The written report usually follows within a few days.
Get a free quote
This is a free matching service, not the firm doing the work. We pass your details to one independent damp and mould specialist who covers your postcode. They contact you, arrange a visit and quote you directly. You don't pay us anything.
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