The accuracy of thermal conductivity measurements is even more requested for materialscharacterization in energy-efficient buildings field. ENEA-UTTMATF and CertiMaC researchgroup, as national institute and private laboratory respectively, cooperate in developmentof new measurement and analysis methods applied to buildings materials and theirperformances. For what concerns this kind of measurements, an Heat Flow-meter Transducer(HFT) is used. In order to give to both customers and other research institutes involvedin the same field (e.g. International Comparison or International Round Robin Tests) themost exhaustive evaluation of the tested material thermal conductivity, a completeuncertainty analysis is implemented on the HFT measures. This uncertainty analysis,developed accordingly to the international standards and with the contribution of INRiMInstitute, is described in this paper.
