A damp patch on an internal wall is a symptom, not a diagnosis. Moisture can appear for different reasons, which is why choosing a treatment before understanding the cause can lead to unnecessary or ineffective work.
Why the pattern matters
Where moisture appears, how long it has been present, whether it changes with weather and whether mould or condensation is also present can all be useful information during an investigation.
Condensation and moisture
Condensation can contribute to mould and moisture problems, particularly where humid air meets colder surfaces. But not every damp-looking mark should automatically be labelled as condensation.
Water ingress and building defects
Water entering through the building fabric can also create damp patches. The appropriate response depends on identifying where the moisture is coming from rather than treating the visible mark alone.
Low-level damp
Moisture at lower wall levels can have several possible explanations. A survey provides a structured way to assess the property and determine the appropriate next step.
When to arrange a damp survey
If the cause is unclear, Olympia’s survey route is designed to establish what is happening before remedial work is scoped. A standard-home damp survey is £249 including VAT; larger or non-standard properties are priced on application.
Talk to Olympia about your property.
This guide provides general information only. The appropriate scope for an individual property depends on its circumstances and, where relevant, inspection or survey findings.