ABSTRACT
Recent diffusion, simplification and subsequent reduction in cost of new technologies, expanded their field of application to vernacular architecture. One of these techniques is infrared thermal imaging, one of the most practical and completely non-destructive methods to assess and study traditional buildings. This paper aims to demonstrate the effectiveness and convenience of combining thermal imaging with photogrammetric techniques, in order to be able to trace plans, elevations and sections from orthophotos that contain thermal information with the final objective of obtaining a deeper knowledge of the construction. The study was carried out on a traditional building in the old town of Béjar, Spain, which over the centuries had suffered from a number of changes and reparations. The text will focus on the analysis of the half-timber walls that, being hidden behind the renderings, would have remained undetected by a conventional survey without the thermal images.
