Hey builders, I want to re-paint an old board I have and I cant remember the article I came across on the web explaining a simple way of just sanding the board, adding primer, then using permanent markers for the graphics and then lastly spray clear coat on it. The question I have is are there certain primer and the clear coat I need? what brand/type? The board is foam core and the graphics I want to do is sort of like grafitti buildings with a lot of color.

Thanks.

You should use acrylic marine varnish with UV blockers. Usualy it sais, what primer tu use. Looks like you know the rest.