What is a ‘Thermal Image Survey’?
A 'Thermal Image Survey' is a non-intrusive, quick and visually effective way to identify air leakage and insulation defects. A thermal imaging survey of building fabric identifies where air leaks in or out of buildings and shows thermal insulation defects.
It is carried out using a thermographic camera (also called an infrared camera or thermal imaging camera or infrared thermography) which is a device that forms a heat zone image using infrared radiation, similar to a common camera that forms an image using visible light. Instead of the 400–700 nanometre range of the visible light camera, infrared cameras operate in wavelengths as long as 14,000 nm (14 µm). Their use is called thermography.