Hi all, i'm trying to devise an experiment for measuring the thermal conductivity and other properties of a layer of glaze (~5mm thick, glaze is similar to that used in pottery and tiling). At this stage, the only samples of the glaze I have access to are fixed to a small clay tile (roughly 20cm x 20cm), i.e. I can't get a sample of the glaze on its own. Would I be able to conduct the necessary experiments on both the glazed tile, and an UNGLAZED tile, and then subtract the unglazed results from the glazed? (in order to find the resultant heat transfer results for the glazing alone). When determining thermal properties, are you able to do this and still obtain a reasonable/accurate result? Let me know if this needs clarification. Thanks for the help.