Coupling electrical resistivity methods and GIS to evaluate the effect of historic building features on wetting dynamics during wind-driven rain spells

•The usefulness of NDT improves by combining several methods and datasets over time.•The evaluation of evaporation areas improves the interpretation of ERT.•Results of NDT are represented in GIS considering building surfaces as a topography.•GIS improves the interpretation of NDT when using map algebra to combine sets of data.•Building features modify maximise local hydrometeorological anisotropy.