The submitted bachelor thesis deals with adhesion of the surface treatment of wood degraded by fungi. The adhesion was determined by a tear-off test on two types of surface treatment to the exterior. The surface treatments were made on degraded pine wood, on the beefy and core parts of the wood. Pine wood has been degraded by two wood-boring fungi (Trametes Versicolor, Coniophora Puteana) and one wood-staining sponge (Aureobasidium Pullulans). The first coating was a polyurethane glaze and the other was an oil glaze. The polyurethane coating was created as a system and the oil was made as a simple surface treatment. The adhesion of both surface treatments was significantly greater than that of the bead part on the core parts of the non-degraded fungi. With the increasing time of wood degradation, the adhesion of the surface treatments fell and was comparable on the core and bead parts of the wood. According to the break-off analysis, the weakest place is the surface layer of wood impregnated with paint.