Since the early 1970's, using infrared imaging for  Building inspections has fast become the norm.  With a thermal imaging camera, missing insulation, air infiltration/exfiltration, poor window seals etc. can all be easily identified, saving inspectors valuable time and resources. On conventional built-up flat roof structures, areas of moisture infiltration can be located quickly and accurately by a properly trained thermographer. These areas can be identified by their image signatures under certain environmental conditions, saving the building owner tens of thousands of dollars in repairs.

Quality Control  Home Inspection with Thermal Imaging (PDF)

Infrared Building Inspections Site