There are four general principles used in drying water damaged structures and materials.  They may be used singularly or, more effectively, in combination.  Drying is a necessity in order to restore water damaged materials to a pre-loss condition.  The four principles of drying include:  Excess Water Removal, Evaporation, Dehumidification , and Temperature Control.

Excess Water Removal – It is highly recommended that excess water be removed at the beginning of restoration procedures.  Removal of excess water may be achieved by physical means such as mopping, soaking, or extracting excess moisture from the effected areas.

Evaporation – Once excess water is removed, remaining water must be changed from liquid to a vapor by promoting evaporation.  This is accomplished by air moving equipment.

Dehumidification – Once moisture is evaporated into the air, the moisture must be removed from the air through dehumidification, or it must be externally exhausted.  Failure to dehumidify may result in substantial secondary damage.

Temperature Control – Both evaporation and dehumidification are greatly enhanced by controlling the temperature in a confined environment.  Additionally, microbial growth is temperature related.  For this reason, temperature modification and control is an important basic principle for safe, effective drying.