With the help of nano-technology it is possible to create very thin, nearly invisible but high efficient coatings. In many different economic sectors silica bonding has been used for two decades now (Böttcher, 2001). The application of this approach in the wood sector seems sensible, as silica is placed in the wood cells naturally and it
changes the structure and characteristics of the wood in a positive way. More about this was discussed in part one of this publication (Eisbein, 2013). While the first part focused on modification of the wood by a preferably deep and even dispensation of silica particles including other composites, the second part aims on functional layers
which are active near the surface of the wood. This area also belongs to key technologies from which special innovative approaches (developments) are expected. Many projects were carried out in cooperation with different scientific and economic institutes together with the Landesamt für Denkmalpflege Sachsen. Furthermore some student projects at different universities has increased the level of knowledge. Nevertheless, an implementation of the products to the general practiceof wood preservation was not successful so far.