What a Damp Survey Should Include
Published: 2026-03-12 • Written by Parkside Construction
Many "free surveys" offered by damp proofing contractors are simple sales leads. A salesman will walk through the property with a basic electronic moisture meter, hold it against the wall where a beep sounds, and immediately recommend a £3,000 chemical DPC injection. A genuine diagnostic damp survey is far more rigorous.
1. Dual-Moisture Profiling
A professional surveyor never relies on a single wall reading. They must carry out moisture mapping both on the surface and deep within the masonry core. By monitoring dampness both horizontally and vertically, a surveyor can trace the exact path of water migration and distinguish between simple surface condensation and actual rising damp.
2. Thermal Imaging and Dew Point Analysis
Moisture is often hidden. Using high-resolution infrared thermal cameras, a diagnostic surveyor can detect cold-bridging points, missing cavity insulation, and hidden pipe leaks. In addition, using an electronic thermo-hygrometer, they calculate the room's current relative humidity, air temperature, and dew point to see if condensation is actively forming.
3. External Inspections & Written Quotations
Dampness inside is almost always caused by defects outside. The survey must include a full exterior check of chimney stacks, gutters, air bricks, ground-paving levels, and subfloor ventilation. The final report should contain clear, practical advice, written reports, and realistic remedial quotations with no unnecessary upselling, so you know exactly what is needed to restore your home.