Hello Forum members! Have the following question to you? I am a trailer on the restoration and would like to paint it against a rusting base. I let it sandblast and then directly painted it with Alkydharzprimer red brown. Now I do not know exactly how I should treat the trailer further, that it is best protected against rust decay! All parts are no longer visible at the end, so can also be applied thickly with the brush!! Please for help, thank you! Marco