The IICRC WRT body of knowledge states that moisture detection instruments allow restorers to evaluate and documentpsychrometric conditions and moisture content or moisture level readings. These measurements form the foundation of drying verification and defensible documentation.
Moisture meters measure moisture within materials, while thermo-hygrometers capture air temperature and relative humidity, enabling calculation of dew point, humidity ratio, and vapor pressure. Together, these tools allow restorers to assess drying effectiveness, establish drying goals, and demonstrate progress over time.
Thermal imaging provides indirect information and must be verified, while manometers and particulate counters serve specialized purposes outside routine moisture documentation.
The WRT manual emphasizes consistent measurement, proper instrument selection, and clear documentation as essential components of professional restoration practice and project closeout.