We studied the kinetics of the tannin-based foam formation, from the bark of conifers by thermal analysis, using differential scanning calorimetry (DSC). In the synthesis of tannin-based foam, we used furfuryl alcohol, glycerol, tannin and pTSA catalyst. The measurements were made on the HP DSC1 STAR System differential scanning calorimeter, using four different temperature programs: one in isothermal conditions and three with the combination of dynamic and isothermal conditions. Based on measurements, we analysed the released heat energy and with "Advanced model free kinetics" (AMFK) method we calculated activation energy and the curing degree of tannin-based foam in dependence of time, temperature and proportion of the basic components. We also calculated the level of data matching of actual measurements with the results calculated by the AMFK method, which was 7.7 %. We found that the optimal proportion of the pTSA catalyst is between 21 % and 22 %. The greater the proportion of catalyst pTSA, the shorter the time to the final strength of the tannin-based foam. The greater the proportion of furfuryl alcohol, glycerol or tannin, the longer the time until the final strength of the tannin-based foam was attained. We successfully studied the kinetics of the tannin-based foam formation, and we found that it is significantly influenced by different proportions of the basic components and the temperature or conditions of the synthesis of tannin foam. In our case, it is not possible to produce tannin-based foam at 20 °C, since the reactivity between the basic components at this temperature is too low.