Non-Invasive Roof Leak Detection Using Infrared Thermography

Residential roofs without attics are typically inspected for leaks by installing scaffolding and probing the ceiling for water intrusion with a moisture meter. This paper discusses infrared thermography’s ability to probe the ceiling for water intrusion without physical contact with the ceiling. Water was applied to the roof in a controlled manner, starting at the lower sections, then moving to the peak of the roof. During the water application, continuous scanning of the ceiling with a FLIR ThermaCAM ® E4 infrared camera allowed instant discovery of the water intrusion