Hello! I'm a new chicken owner in SE Wisconsin (zone 5), and I've been trying to figure out what type of roof is best for the coop. I'm not sure if plywood or a corrugated material is best and if one is better than the other for ventilation? I am planning on adding several ventilation holes/rectangles, but am concerned about moisture build up in winter. I also don't plan on adding a heat source for winters. I have three EE's total and the coop is 3'x3' and the run is 9'x3'x5'. I've attached a design for the front of my coop that I made in Adobe Illustrator. The coop will be butted up against our garage and the front will be south facing. Thanks for reading!