I was thinking of (stick) building a lean-to on the back of the barn. The floor area would measure 4' X 8'. The cost would be about the same if I were to instead buy one of these metal buildings, you know, the back yard storage shed type. The floor area of it would be 10' X 6'. Your assignment, Mr. Phelps (should you decide to accept it) is to give me some thoughts and opinions.
Also, does anyone have knowledge on the health aspect of chickens walking on treated lumber?