1. by saponifying by means of lyes and then rewashing and neutralising with diluted acids. Particularly effective with old linseed oil and oil varnish films.
2. Even two-component coatings such as DD and polyacrylic coatings can be removed with specialist strippers. Polyester coatings must be ground off. The composition needs to be checked to determine if it includes any halogenated solvents. Pay attention to the corresponding specifications and disposal. Also ensure that the surface is free of silicon and residual grease by washing down with benzine before applying the paint stripper.