You'll see postings here with it hung both ways. I use the rough side. I can't see much of a difference. On mine the smooth side has the sticker. However, I did cut a 7" strip off the end (to fit the screen on my wall) and from time to time have placed that smooth strip over the rough side I use as my screen and really don't see much of a difference so I have left the rough side as my screen. By the way, I have the plas-tex on top of my awful whiteboard (see earlier postings) for stability. I just use small curtain rod hangars (not the rods...but the kind of hangars/supports, whatever they're called, used for little curtains to hold a rod on the inside window of an outside door) into my wall and place the boards onto those. Simple. Just a tiny screw at the top of the boards (both corners) and into the wall to keep it from falling forward. Hardly noticeable. AND if you put a black border around the edges you would never see those screws (I did not bother with a border since my walls are dark.) I explain this a little better in my earlier postings 2 years ago. If you care, just search "hawaii23". Good luck with your set-up. If do-able ever comes around here I may look into that since everyone says it is the best for just hanging something cheap. :-) How is Chicago...miss it...spent 14 years there until '98.