I need to be primed on primer →[More:]I want to paint the main staircase in my house, and then put a carpet runner down. I bought porch and floor paint for this. But I was not told to prime first. The stairs are quite old and have never been painted, though they appear to have been varnished before. Will it be okay if I just paint the steps with the floor paint given that it's only the few inches at each end of the steps that will show and they won't get walked on much at all?