We optimised liquefaction of cork (Quercus suber L.) dust, and on the basis of the liquefied cork prepared novel polyurethane wood coatings. The cork dust was liquefied (T = 180 °C, t = 120 min) in glycerol, with the addition of H2SO4 as a catalyst. To the liquefied cork, various isocyanate curing agents and catalysts were added in order to find the most appropriate formulations for novel polyurethane wood coatings. Some surface properties of the selected liquefied cork based wood coatings were characterised by standard procedures. All the coatings tested, exhibited quite low resistance against water.