Our fireplace hadn't been used in quite awhile so I wanted to make sure all dirt was removed and the paint would stick. I would advice roughing the surface up a little with some sanding and then cleaning up a bit so you're working with a fresh surface. Of course, be sure to tape off ALL areas around the painting surface. And this stuff DOES travel. I had some on the floor, but my steam mop got it right up.
I let the paint sit and dry before I started removing any of the tape and paper. I did NOT want black all over my walls... accidents do happen. Here's the before and after pictures. We've gotten a mantle for it recently and I'll post those up soon.
|Don't mind the shadow on the bottom : )|