Atmospheric moisture imbalance leads to water deposition (condensation), deterioration of decorations, mould, and timber decay. For many people, the appearance of even small areas of seasonal mould is now a significant cause for concern. This session will explore how water transported through the air, requires surveyors to understand the physics, politics and products that are making this natural mechanism a growing challenge in modern homes. The talk will consider:
- Public awareness and impact on building and occupant health
- Water activity, vapour movement and wetting and drying
- The importance of heat and temperature
- Ventilation and air exchange
- The assessment and measurement of moisture balance
- How to report your observations and assumptions
Steve Hodgson, Principal Steve Hodgson Building Consulting Ltd

