The main application fields of thermal expansion measurements in the silicate research are summarized. Special emphases is given to frost dilatometry, the expansion effect due to water freezing on the low temperature thermal expansion curves of water saturated porous solids.Thermal expansion measurements have important role in the silicate research. The results of the measurements can be applied as data characterising the behavior of materials (thermal expansion coefficient), or for solving analytical tasks.Thermal expansion coefficient is usually determined when a new material was synthetized or found e.g. [1][2][3][4][5], in other case when structural materials or composites are exposed to changes of temperature during applications [6][7][8][9]. In the field of glass and glaze research there is a continuous demand for development of glasses, glass-ceramics and glazes of certain thermal expansion coefficients. In connection with this developing several methods were proposed for calculating the expected thermal expansion coefficient based on chemical composition data e.g. [10][11][12][13].Linear thermal expansion curves can be used for qualitative and quantitative analysis of ceramic row materials, though their mineral components show different types of dilatation behavior when heating e.g. [14][15][16].Low temperature measurements are seldom used although the knowledge of low temperature thermal expansion coefficient is important for both theoretical and practical reasons [17][18][19][20]. Low temperature dilatation measurements were used for research of superconductors as well [21][22][23].Special application field of low temperature dilatation measurements is the research of porous materials exposed to weather conditions.