- Clean the surface and remove any loose coating with a scraper and a steel brush.
- Use sandpaper on damaged areas and around the damaged area's edges.
- Remove impurities, such as dirt and grease, with warm soapy water.
Rinse with warm water.
The surface must be completely dry before starting maintenance painting. Protect the surfaces that will not be painted with tape or paper.
Make sure the air temperature, the paint, and the painted surface are at least +10 °C and the relative humidity below 80% during painting and drying. Do not paint in rain or in direct sunlight.