where are u locatedWe are in eastern Washington and can get some very cold winters. My main coop is 6'x6'x4' with the top back half insulated with the sheet insulating foam board and the bottom half is screened. I put in storm windows on the upper half for the warming winter sun to penetrate. Then two additions on each side which are both screened in, one with a slanted covered roof and the other is a wire roof. I wrap the vertical screened area with 4 to 6 mil plastic each winter. I planned ahead and put up two shelves with formica sheeting on the top insulated half with shower stall inserts on the upright surfaces. I wanted ease of poop scrapping and ease in cleaning the walls and have been very pleased with the preparations. For this winter I have a heated poultry waterer and will be using straw in addition. The soiled straw is great to recycle in a compost pile in preparations for gardening. My girls have been healthy, happy and giving us delicious eggs. I am so hooked on having chickens as pets as well as productive members of the family.