I am nearing completion on my coop and I am concerned about having too much ventilation and need some ideas. I will describe as I go, thank you for your advice and help! Front of the coop. The majority of wind and rain / snow blows from this side so we decided to completely enclose the roof. We have installed prop open windows, covered with hardware cloth, which can be opened easily to allow for air flow as needed. The doors on the left side will also have similar windows, as soon as we find some. The overall dimensions of the coop are 14 feet x 7 feet, approximately, and 10 feet tall in center, 5 feet on end. Each end is open about 8 inches from the top of the wall to the bottom of the tin. I will be reinforcing with hardware cloth to prevent predators, but plan on leaving this open for ventilation permanently. With the large overhangs I am not concerned about rain / snow getting in. There will also be a large window on each side that can be opened as needed. This side in my main concern. The entire section is open and will be covered with hardware cloth. The wind and rain hardly ever blow in from this side of the coop, but I will watch for any "wet" spots. The run will also be extended from this side and prop doors will be added. I had planned to partially cover unneeded ventilation space in the fall / winter, but I am not sure how much to cover. My idea was to leave the top 1 1/2 foot of the peak open and enclose the rest with plywood that I can remove easily. Would this be too much ventilation when considering the others in the sides of the coop? This is the roof before the tin, to get a better idea on size if needed. Again, thanks for your help! Also, if it makes a difference I will be using the DLM and will have about 30 chickens.