I recently bought a 2005 Pace American 7 x 16 enclosed trailer. The wood inside was in pretty bad condition, as you can see. I am planning on installing 3/4 BC plywood on the floor and 3/8 BC plywood on the walls. I noticed when I removed the old flooring, the bottom of the plywood was painted black. What should I put on the bottom of the new plywood before I install it. Also I need advice on painting the finished side of the floor and walls. I definately want to finish the floor, but not sure if I need to do the walls also. I have thought about a bedliner material or a textured paint for the floor. Any ideas or suggestions would be great. Pictures would be cool too.