Dew point, condensation and mould risk

Mould risk cannot be reliably inferred from one isolated humidity reading. Time, temperature, surfaces and ventilation are essential.

Dew point

Dew point is the temperature at which air becomes saturated if its moisture content remains unchanged.

Surface temperature

Condensation can occur when a surface becomes colder than the local dew point. Prolonged high surface humidity can also create risk without visible condensation.

Coherent monitoring

Loggers in representative positions, an outdoor reference, use information and possibly surface temperature provide a much stronger picture than a single spot reading.