You will have to post pictures of what you do.I have access to three sliding glass doors that I was going to incorporate into a coop. Thanks for the ideas. I also use 5 gallon buckets for a heat sink. The buckets also work in summer for cooling. When it’s too hot the chickens will all dig in around the buckets. The barns foundation is just behind the buckets so they are also getting cooler from the cement mass.
Not that we get too cold.