Surfaces must be clean, dry and free from all defective and poorly adhering material, dirt, grease and salts. Dry sanding, flame cutting and/or welding of the dry paint film will give rise to dust and/or hazardous fumes. Wet sanding/flatting should be used wherever possible. If exposure cannot be avoided by the provision of local exhaust ventilation, suitable respiratory protective equipment should be used. To fil and coat the surfaces: Use NEOPAL STUCCO. For new surfaces or porous surfaces coated with lime or low quality paints: Prime with NEOPAL PRIMER for interior or VIVECRYL PRIMER for exterior surfaces. For the refinishing of sound surfaces apply directly NEOPAL RELIEF.