Hi everyone! First time posting. I'm just finishing up my chicken coop, it's basically a 12'x12' wooden shack. I made it big enough for a larger flock down the road, but at first we're just going to start off with 10 hens that my mother in law is giving us. The winters can be unpredictable here in Southern Oregon, so I want to make sure they don't freeze to death if we get in the sub-zeros.
I'm currently lining the walls and ceilings with cardboard, and my plan is to do another layer of cardboard over that, with about 3-4" space between, that I'll stuff with straw for insulation. Ill also do a deep bedding system, building up layers of straw on the floor till it's maybe 1' - 1.5' thick. Has anyone done anything like this? We're off grid, with minimal solar, so supplemental heating would be difficult. Any other ideas for keeping chickens warm in winter would be greatly appreciated. Thanks!