Infrared thermography (IRT) is a non-contact and non-destructive testing technology that determines the surface
temperature of an object expressed as a thermal image, where each color corresponds to a certain range of
temperatures (Fig. 1). Two approaches can be used to obtain the surface temperature distributions using infrared
cameras: the passive approach and the active approach. The thermal images can be analyzed qualitatively or
quantitatively [1]. IRT enables to assess the thermal behaviour of building elements and allows identifying
anomalies and degraded areas [2-8]. Although less common, IRT is also used to assess moisture in building
components [9-11] as changes in moisture content can be related with changes in surface temperature due to:
evaporative cooling at the moist area, reduced thermal resistance and increased heat storage capacity of the moist
material. However, only indoor conditions were tested in these researches. When one intends to assess IRT potential
in outdoor conditions, several additional constraints appear.