The Principles of Dampness and How to Measure It

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This talk will debunk some of the misinformation that has grown up around dampness in buildings to give surveyors confidence when giving advice to clients or evaluating specialist reports.

• We will examine about how buildings get wet and how they dry
• Consider the implications of excess water and how this relates to our moisture risk assessments
• Examine and demonstrate permeability, porosity and density of construction products and think about how these properties affect moisture performance
• Explore the importance of hygroscopic salt and how to find them and what to do when they are present
• Examine the strengths and weaknesses of electric moisture meters and discuss why they are a must have for every surveyor. We will also look at how to interpret what they may and may not be telling you
• We will see by example how free and bound watercan be measured on and off site and think about why this may be essential

Steve Hodgson, Principal Steve Hodgson Building Consulting Ltd