The results of thermographic research make it possible to model the actual operating conditions of selected parts of building structures. The article presents diagnostic analyses using thermographic tests of plinth zones in historic buildings. The results of the research form the basis for making decisions on thermo-renovation projects, and in historic buildings these decisions are additionally conditioned by the need to meet conservation requirements. The analysis carried out in this article shows that information about the temperature range in different parts of a building can be obtained using thermal imaging research, but not every result from research carried out with a thermal imaging camera can be used for further analysis. Thermal studies carried out only in accordance with the guidelines given in the standard allow for the acquisition of data that are necessary to carry out accurate simulations of the partition's operation over time and to select the most appropriate thermal insulation model.
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