I HATE wooden barns. Am I the only one? Everytime I see a wooden barn, all I can think about is wood rot, chewed off doors, and the uncleanable walls.
My end goal in life to eventually open an equine rescue. To me, wood does not seem like a smart idea in a barn. When I worked at Dixie, they had wood stalls. They were nearly impossible to get clean when you fed mash or someone had diarrhea. They got cracked when kicked and the horses were constantly chewing on anything they could get their mouths on.
Plus, if there were a small fire in a barn, wouldn't wood be an even worse idea?
Also..I HATE wooden doors. I've been looking at these. YES they would be significantly more expensive BUT, they're easy to clean, allow for more air flow. Granted your barn would look more like the county jail, I like them.