One of the most common forms of damp in buildings is condensation, which forms when there is a high level of humidity, placing a lot of water in the air. When this water-laden air comes into contact with a cold surface, condensation forms due to excess moisture. When condensation isn’t dealt with, it can cause window frame decay, mould growth, and fungal decay in timber beams. Treatment for condensation includes lowering moisture levels, installing efficient ventilation and eliminating cold surfaces. Beyond this, exterior fans can be used to remove moisture from the air and specialized insulation materials can improve the buildings’ overall heat retention.