Your Questions Answered "The rising damp in the walls is causing the condensation"
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"The rising damp in the walls is causing the condensation"
This is a surprisingly common misunderstanding but it is not true. Let us imagine an ‘average’ three bedroom house with an ‘average’ number of walls affected by rising damp to varying heights. If we are now generous and imagine that our ‘average’ house has a total surface area of 20m² of wall actually affected by rising damp. Enter into this ‘average’ house one living, breathing and perspiring adult. If the surface area of that adult’s lungs were laid out flat on the floor they would nearly cover a tennis court! If we then apply body heat and powered ventilation (breathing) over the moist membranes of the lungs one breath will introduce more water vapour into the atmosphere of our imaginary house than 20m² of damp wall would in weeks! If we now add to this 2m² of perspiring warm skin, representing 10% of the wall surface area affected by rising damp, you begin to see how condensation is not caused by nor is it likely to be a consequence of rising damp. If you then go on to imagine the lung surface areas involved and water vapour production if three or four people lived in that house with a panting dog!
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