as well as the condensation, the plywood will significantly reduce noise from rain, you might wan't to cover with roofers felt also. the edges can be covered with a flashing like the other person mentioned. You can see it here on the gable end...
and the wealth of knowledge yall share so willingly.
I just wanted to say thanks, and share with yall the pics of our new coop
hole
posts
rafters and rocks (because one side was alot deeper :-)
concrete
chicks arrive (get picked up)
windows
hardware cloth
metal...