done static caravans have thin sheet steel skins I think. Paint obviously.Ah I should've mentioned it's a static caravan so it's not a metal roof, not even sure what material it is tbh
Most places say it can be polished and waxed after a week now.It's best to leave freshly painted bodywork alone for a couple of weeks at least. Just to let the paint harden properly. Maybe a gentle wash, but ideally just leave it be.
It's worth getting it ceramic coated after a couple of weeks. Just brings it to another level, protects the new paint, and makes it so much easier to keep it clean.