Thermal Imaging which is commonly known as Infrared Thermography is based of the principle that every object above -273°C emits energy or heat. This heat cannot be seen by the human eye. However, by using a Thermal Imaging camera it is possible to detect this energy and make an infrared image. This image shows the variations in heat through a colour scale. In the images provided we can generally say that the darker areas in an image represent a cold spot, and hotter areas are shown by brighter colours. In the building industry Infrared Thermography is mainly used to show insulation problems, cold spots, draughts, location of under floor heating, and leaks in flat roofs etc.

Infrared Thermography is not only used to survey buildings. It can be used for a wide variety of applications and its uses are increasing every day. Some other applications of Infrared Thermography are :

• Electrical maintenance (circuit boards)
• Cold storage inspection (heat gain)
• Pipe inspection
• Quality control and process monitoring
• Veterinary
• Search and rescue
• Mechanical bearing inspections
• Tyre performance

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