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Infrared thermography , thermal imaging, and thermal video are examples of infrared imaging science. Thermographic cameras usually detect radiation in the long-infrared range of the electromagnetic spectrum (roughly 9,000–14,000 nanometers or 9–14 µm) and produce images of that radiation, called thermograms. Since infrared radiation is emitted by all objects with a temperature above absolute zero according to the black body radiation law, thermography makes it possible to see one's environment with or without visible illumination. The amount of radiation emitted by an object increases with temperature; therefore, thermography allows one to see variations in temperature. When viewed through a thermal imaging camera, warm objects stand out well against cooler backgrounds; water and air intrusion as well as missing insulation are detected. As a result, thermography is particularly useful on property inspections.
Having a combined knowledge on how to use an infrared camera and the understanding of building science makes for a more superior evaluation. Home inspectors that are trained in building science and understand the synergy of a building can diagnose anomalies that thermal images provide. This gives an advantage to clients who choose inspection services like RTS Inspections for their inspection needs.
 When water and moisture vapor intrusions are observed and properly diagnosed the result is unnecessary damages to property are averted. Thermography has a long history, although its use has increased dramatically with the commercial and industrial applications it’s finding an extremely useful place with building inspections especially with the residential buildings.