Drying buildings following flood and water damage

A major set back in the restoration process is the time taken to dry out buildings, prior to starting remedial building work. There are potentially hundreds of litres of water that remain hidden within the building’s structure.

As a result, buildings remain unfit for use or occupation for many months, during which time high internal humidity levels can cause secondary damage and increase the risk of dangerous mould growths.

Whilst the drying rate of a material will vary according to its porosity and density, it is also determined by the ability of moisture to evaporate into the surrounding air.

Drying rates are greatly improved by lowering relative humidity, adding heat and increasing air movement.

Ideal drying conditions of 35 to 55 %RH can only be maintained if the dehumidifier capacity is greater than the rate at which moisture is being evaporated.

If the internal relative humidity rises uncontrollably (e.g., condensation on external walls and windows) it is a clear indication that the dehumidifier capacity is too small.