Primers and paints. Intermediate paints for interior and/or exterior work. Adapting intermediate paints to European standards

This technical document specifies the requirements and test methods for intermediate coatings of paint systems used indoors or outdoors. The scope encompasses both single-component and multi-component products intended for application on various substrates to provide a barrier against corrosion and enhance adhesion for subsequent layers. The text details the physical properties, durability, and chemical resistance expected of such materials under defined environmental conditions. It establishes criteria for viscosity, drying time, film thickness, and adhesion strength to ensure compatibility with existing European standards for protective coatings. The document addresses performance evaluation techniques including resistance to moisture, salt spray, and temperature fluctuations. It serves as a reference for manufacturers and users to assess product quality and consistency. The content covers classification, labeling requirements, and packaging guidelines to facilitate safe handling and storage. This resource supports the harmonization of technical specifications across different markets by aligning national practices with established regional norms. It provides a framework for quality assurance processes in the production and application of intermediate protective layers for industrial and commercial environments.