Can epoxy primer be used over Rustoleum rattle can gloss black paint?

Well, I can tell you if it was my paint shop I wouldn’t touch it with a 10 foot pole. It would go to bare metal, because that’s the only way I’d be comfortable putting my name on it.

Obviously doing it yourself is a totally different story. It’s just what you’re willing to risk. But personally, I’d strip it. You’re talking about what, a day or two of labor to get it back to bare metal? That’s not much gain. Meanwhile, you risk ruining a batch of primer at least, after which you’d have to go bare to metal anyway.

The other thing is, it may not end with the primer. Sure, the primer might lift, wrinkle, or obviously fail somehow. But, it might also react and cure differently without lifting. And then the topcoat might not lay over the primer, it could react and wrinkle or lift too. They call them paint systems nowadays for a reason. Still up to you if you’re doing it yourself, but you could be risking the primer and the topcoat. There are chemical reactions that take place between each layer, mess with one and it can effect all of them.

With what paint costs, I’d just do the labor the first time around.