The Disco suffered at one point in Iceland from a poorly loaded roof rack (not by me), where some rucksacks scratched (rubbed) through the paint down to the steel in a few places. I covered it in Vaseline to protect it temporarily, but having worked out my options on getting it done professionally I've now got the aerosol paint and lacquer to have a go myself.
Any pointers as to how best to do this? How should I prepare the surface? What should I use to underseal it? It's not a paint shop job just yet, as the roof isn't that visible most of the time, but I'd like to make as good a job as I can.
Thanks, David.