Damp is one of the most common problems affecting UK properties. Understanding what causes damp – and getting proper diagnosis – prevents wasted money on ineffective treatments.
Why Damp Surveys Matter
A wet patch on a wall could result from rising damp, penetrating damp, condensation, leaking pipes, failed damp-proof course, or blocked drainage. Each cause requires different treatment.
Misdiagnosis is common, particularly from contractors who only offer one solution. A proper damp survey identifies the actual cause before recommending treatment.
What a Damp Survey Involves
Visual Inspection – Examining affected areas for staining patterns, tide marks, localised patches, mould growth, and external defects.
Moisture Measurement – Electronic moisture meters measure levels in walls, floors, and timbers. Skilled interpretation is crucial.
Environmental Assessment – Heating, ventilation, occupancy patterns, and building construction all influence damp causes.
Investigation – Lifting flooring, opening up areas, testing drainage, or using thermal imaging where necessary.
Understanding Damp Types
Rising Damp – Moisture from the ground rising through walls. Characterised by tide marks up to about one metre, salt deposits, and affects ground floor only. Less common than the damp-proofing industry suggests.
Penetrating Damp – Water entering through defective roofing, cracked render, failed pointing, or leaking gutters. Usually corresponds to external defects.
Condensation – Warm, moist air contacting cold surfaces. The most common damp issue, often misdiagnosed as rising damp.
Choosing a Surveyor
Choose surveyors who are independent (no treatments to sell), properly qualified (RICS), willing to investigate properly, and able to explain their findings clearly.
Using Survey Results
With proper diagnosis, you can get targeted quotations, avoid inappropriate treatments, brief contractors accurately, and have evidence if disputes arise.
Get Expert Diagnosis
Emerald Ritter provides independent damp surveys across Gloucestershire. Contact us to discuss your concerns.
