We are currently in the process of constructing our first coop for our soon to arrive 5 chickens. We live in New England where temps can range from 30*- 80* in one day and our winter months we have frequent below zero temps. We are modeling our coop after the witchita cabin coop ( here on BYC) which has a raised coop- we have insulated the floor and used house wrap on the side walls-do you think we should insulate the roof? I know we need adequate ventilation so I dont want to close it up too tight. The coop is 4'x 5' and will have two large windows 18" x 24 approx, and 2 vent panels along the roof/ceiling line.