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Condensation

Condensation is water that has been released from the air. Air contains water vapour in varying quantities, how much it can hold depends on its temperature. Warm air holds more moisture than cold air. When moist air comes into contact with either colder air or a colder surface, the air is unable to retain the same amount of moisture and the water is released to form condensation in the air or on the surface.

If this happens outside, near the ground, dew or frost will be formed. If a larger amount of air is involved, mist or fog will arise. If this happens to air that is rising in the atmosphere and expanding, clouds will form. If it happens in the home, it's called condensation.

Condensation is generally noticeable where it forms on non-absorbent surfaces, such as windows, mirrors or tiles, but it can form on any surface and it may not be noticed until mould growth or rotting of material occurs..

Log in for detailed information on:

• Effects of Condensation
• Where does the moisture come from?
• Conditions in which condensation occurs
• Condensation control – lifestyle of occupants
• Condensation control – basic building structure
• Condensation control – heating, ventilation, insulation
• Condensation control – glazing and decoration