What is psychrometry in water damage drying?
Psychrometry is the scientific measurement of moisture content and humidity in air, used by restoration technicians to guide equipment placement and drying rates during water mitigation work.
Drying technicians use psychrometry to understand the behavior of moisture in air. The field combines mathematics and physics to calculate relationships between dry-bulb temperature (actual air temperature), wet-bulb temperature (cooler reading from a wet cloth), and dew point (the temperature at which air becomes saturated and condensation forms).
When water saturates building materials after flooding or a burst pipe, air in the structure becomes humid. A psychrometric chart plots these three variables to show how much moisture air can hold at any temperature. The team read wet and dry thermometers on site, then cross-reference the chart to determine current humidity levels and the dew point. This information guides decisions about placement of dehumidifiers, air movers, and heaters.
Why it matters: If dew point is higher than the temperature of surfaces like walls or concrete, moisture will condense on those surfaces even if dehumidifiers are running. Understanding this relationship helps structural drying technicians prevent secondary damage and optimize drying time. Different materials and moisture contents require different temperature and humidity targets.
Psychrometric principles apply across all water damage scenarios: carpet extraction, cavity wall moisture, basement mitigation, and contents restoration. The team restoration firms in Ontario rely on psychrometric monitoring to document drying progress and adjust equipment for efficient moisture removal.