This will be our third CT winter and I'm going to do something different with the wrap. Instead of fixing the wrap using staples, I'm going to hang/fix the wrap using hooks. I would like to be able to 'Roll up the wrap' on sunny, non windy days with the option to fix it to the run if heavy, cold winds come. Our winter was pretty mild last year and I took the wrap off somewhat early compared to the year before. Hens seem to thrive in what i would call cold weather. They seem very comfortable in the 30's-40's. Even when its below 30, they seem comfortable unless the wind comes. 0-10 degrees they all stand around like they are starched. We shall see. Good luck with the winter everyone. If your new to chicken keeping this winter, your chickens are more comfortable than you think. Blocking every little nook and cranny is not necessary. (I did that my first winter). Fresh air making its way into the nooks and crannies is necessary imo. I think super fresh air is more important than fussing over blocking every little space, crack or hole. Leave ventilation along the top of whatever you wrap. 
