Folks, I need your help please. We have a beautiful coop built this summer by my husband. The coop is 10x12 barn style. It has chip board on all sides and 1x4x12 spruce tongue and grove on the outside and asphalt shingles on the roof. One new window in the back. It is not insulated. The nesting boxes will be on the left, that is the east side. The window is facing south where 95% of our wind comes from the south. My husband doesn't think it needs to be insulated, but I am worried about our girls. It will get wicket cold here this winter. We always have a cold snap. Last year we had 2. The windchill can be as low as -30C (-22F). That should be the lowest the temperature would be. (It was -33C one or 2 days last winter). It would not be unusual for it to be -8 to-12 C (12-17F) for weeks. I am going to put hay all around the bottom of the coop to block the wind from blowing under the coop. Any and all help and suggestions you can give uswill be appreciated. You can see pics of the coop in my profile. 18 RIR girls and 1 Rooster Max.