5 litre kit will do an exterior and interior easy. 100 microns wet is 10 metres square per litre..
Appropriate primers are not really automotive ones, more a 2 pack epoxy. And that should be overcoated within a month or so.
I just used a heap of Protec Polythane 625 and it is truly awesome. It will absorb overspray for ages so it is good for big surface areas. That would work great on a car.. however Protec are completely mental to deal with. Wattyl are easy. Having said that I am sure the last Black I used in the poly U range was tinted locally and they broke my balls about how much tint they used ....
Appropriate primers are not really automotive ones, more a 2 pack epoxy. And that should be overcoated within a month or so.
I just used a heap of Protec Polythane 625 and it is truly awesome. It will absorb overspray for ages so it is good for big surface areas. That would work great on a car.. however Protec are completely mental to deal with. Wattyl are easy. Having said that I am sure the last Black I used in the poly U range was tinted locally and they broke my balls about how much tint they used ....

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