Yes, TotalBoat Aluminum Boat Paint can be applied over latex primer that has cured completely, which can take approximately 5-7 days, depending on conditions. But it's important to note that since latex primer is much softer than Aluminum Boat Paint, the paint will cure with the same texture as the surface of the latex primer beneath it. That said, if you decide to apply the Aluminum Boat Paint over cured latex primer, make sure the primed surface is free of any contaminants, then sand lightly, and remove all sanding residue before applying the Aluminum Boat Paint.