The paper discusses the influence of ageing with sodium chloride water (3, 10, 20%) solutions on the destruction of epoxy coatings. The immersion of coatings in these media has caused the destruction of the coating surface in the form of cracks and increased roughness proportionally to the immersion period. The degree of surface destruction has increased along with the concentration of sodium chloride solution. Also, on the other hand, the inside structure of the coating has been subjected to changes that have occurred in the form of porosity growing with an increase in the ageing period.