This seems like a very good solution! I did not think of the tape idea. I've had my original Ador1 for about 2-1/2 years now, and I solved the draft problem by building a wind block between the door and the roost, directing the air coming in through the sprocket holes at a right angle away from the roost.
I agree with you, Rod, that a chicken coop needs much more ventilation than what would come in through the sprocket holes. And yes, chickens in the wild do sleep outside, but in the wild they do not live in winters that routinely dip below 0*F before wind chill. Adding a draft to those temperatures would not be a good idea. The concern was not how much wind came through the holes, but that the door is near the floor and thus the wind entering would blow right up through my chicken roost before exiting through the ventilation windows near the roof of the coop. My well-sealed coop is otherwise very well-sealed, with vinyl flooring covering the floor and walls, and duct tape along all the seams.
In my coop, all the ventilation is up near the roof (except for the Ador1 sprocket holes), and in extremely cold weather, I only have one side of the coop open (the same side the Ador1 is on) to prevent it from being very windy inside the coop. So lots of ventilation but very little draft. And even less once I use the ingenious tape idea.
