Treating an
infested area

• It is important to find out what caused the mould outbreak in the first place.
• The room where a mould outbreak occurrs must be dried and thoroughly cleaned before the affected material can be returned to it. For moderate to large mould outbreaks contact Library Conservation and Collection Care Service for advice on the use of dehumidifiers and cleaning of the premises.
• If the RH is above 55%, it must be lowered before the collection is returned to the area. Adjusting the HVAC system or adding a portable dehumidifier may be all that is necessary. Also check for leaks or water and condensation. If air conditioning is present it contact the University Surveyors to inspect the heat-exchange coils in the heating/air-conditioning system, a notorious breeding ground for fungi.
• Vacuum clean the shelves and floor with an HEPA vacuum cleaner, then clean them with a household disinfectant. Before returning the cleaned material to the area, monitor the RH for several weeks to make certain it does not exceed 55%.
• After the items are returned, check daily for new mould outbreaks.