scope:

This part of EN 927 specifies a system for the classification of coating materials and coating systems for exterior wood surfaces by categories of end use, appearance and exposure conditions. It is applicable to all coating materials and coating systems intended for decoration and protection of exterior wood surfaces, including those which contain biologically protective ingredients for the protection of coatings and at their interface with the wood surface (film preservation). The coating materials may include biologically active ingredients for the protection of the liquid coating material, for example during storage (in-can preservation).