After more hours than I care to admit of coop research, I find myself wonder if buying a metal shed instead of building a coop would be an option. My thought was to buy a moderately priced metal shed, cut plenty of ventilation windows and a chicken door, and use the doors that come on it as human doors, with an enclosed run off one side. We live in east Texas, and it gets HOT here. Is there an inexpensive way to insulate a metal building enough that I won't be cooking my chickens in their coop? Has anyone had any luck making a coop like this, or bad luck?

I'd stick to wood. And build it up so they can go underneath the building for cooling off in the dirt.