The king procrastinator has finally cleared the schedule and construction is ready to begin. Spent a little under $500 at Lowe's this morning and picked up about 85% of the materials I'll need to construct my 10x12 coop. There's a few pieces to the coop I have not worked out just yet including minor detail work like PVC watering, feeder and various latches/hinges... but a bigger undecided piece right now involves roofing and windows. I have narrowed the list of roofing materials down to three possible choices but I am always open to better ideas from the more experienced. Roofing Corrugated aluminum, corrugated fiberglass or plain old OSB with shingle work done to it. I really can't decide here, the fiberglass was appealing because it would let more light through but if I do windows(see part 2) that won't be necessary. I also live in a woodsy area and branches piercing through the roof could be a minor concern but probably not too big of a threat. My chickens aren't fussy, they don't need the latest, greatest materials in home building but I am just looking for people who have come to this decision before and what they chose to do and why. Windows I have been browsing Craigslist and have come across several windows that I think would be great for my coop. I saw one window that was gigantic, 60"x100" for only $50 and thought it would be pretty cool to have a gigantic window on one side. However it raises concerns for me as whether or not such a vast openness would take away from the privacy factor and make the hens more hesitant or stressed when laying. Right now my nest boxes are in the run and they HATE using them, my whole current coop is an amateur disaster, is why I'm building a new one. Well thanks in advance, any suggestions, ideas or critiques would be much appreciated.