Garage door panels may be an unusual material to have around in a "scrap materials" pile, but I'm wondering if there's any reason they couldn't/shouldn't be used as part of a chicken or duck coop. We had a barn fire last year and the heat from the fire melted some trim around the garage door windows on our house (barn was completely lost). Our insurance adjuster included the garage door in our settlement check so we replaced the door. Since we installed the new door on our own, we still have the old door. It's an insulated 8'x16' door, so...4 16' long panels I think. I was thinking about using the panels on the "back" side of a new coop. We don't have a lot of trees on that side so in the winter, it's the side that gets hit with cold winds. I thought the insulated door might help cut down on cold winds chilling the coop. As long as we have ventilation in the coop, is there anything bad about an insulated wall?