I used SmartSiding on my coop, No insulation, No interior walls. You don't need insulation. Unless you are heating the coop like your house, and you are trying to keep the heat in. What's the point? It's going to be as cold inside as the outside anyway. The chickens come with their OWN insulation against the cold. You are only supplying living quarters for mice and other pests when you add interior walls to a chicken coop. Just build a dry secure place for them, and the chickens will be fine.
Jack
Jack