you might have a look at tongue and groove laminate flooring to see if they have anything suitable. I did this test shot to find a suitable blanket for a "hanging baby" shot and used this section of laminate flooring as a background. I assembled 10 planks for the shot, and then disassembled them afterwards as storage space is limited for me. I simply leaned the assembled unit against the wall with duct tape holding it in place. If shine is an issue, you can spray it with dulling spray, available at any craft store. I THOUGHT I would get shine from this but did not, but in going for a worn barnwood look, you might have an issue there.
please log in to view hosted photos.