We are ready to insulate our coop as we live in Eastern Ontario and winter nights hover between -15 to -20c or 5 to -5f. My question concerning insulation is we are planning only R16 for walls and ceiling, is this enough? Also proper building method includes vapour barrier on the inside, is this what everyone who has insulated their coops has done? If we do not vapour barrier, moisture coming through the walls will be an issue in winter. For ventilation, this is a big concern and I'm a little confused. I have read the page on ventilation which is very helpful. It states 1sq ft per chicken for ventilation - we will have 6 chickens so 6 sq ft of ventilation seems like a lot. The coop itself is 8'Wx8'Lx8'H so we are dealing with 64sq ft of which 10% will need to be ventilation in some form or another. Our plan was to have two windows and one man-door with a window that opens so with all three open, this would provide approximately 3 sq ft of ventilation and all of these will not be at the top of the coop as recommended especially for cool winters. I could install vents along the top of the walls that can be opened and closed and was thinking of using what they use for vents for furnaces up here, approximately 4"x12". I would need 9 of these vents all along the top which is doable however it would also mean opening the windows all the time to obtain the 1sq ft per chicken. I don't see this in most of the coops unless I am not looking close enough and can't imagine during the winter to have ALL of these open especially at night. Can someone allay my concerns or suggest alternative ways to get the required ventilation? Thank you!