I have run into a problem with my coop. I have a 4 by 8 coop with 2 windows on each side and then a 4 by 2.5 door on the front. I dont really have any room on the sides of the coop to mount and vents. My thought was to install a roof turbine for ventilation. I can make it so it is on top of the roost of to away from the roost. My question is will the roof turbine work (not leak when it rains) and where should I install it (over the roost or away from it)? Let me know my options.