In all my paint testing I haven't tried using an epoxy primer yet. just spray cans. I didn't want to get out the spray gun equipment so I thought I'd try rolling it on. It went on well, but seemed to tack up REALLY quick to the point of peeling off by over rolling parts. It now looks no different than my living room walls and I'm hoping it sands nicely. Also I should mention that this 1 heavy coat weighs almost 4oz heavy! This may not work out. more later...