Have another more detailed winterizing coop concern...
How do you keep water from freezing without burning down chicken coop? Leaving water and feed outside is not an option as our run is open. I wanted to get the waterer heater (that is under the metal waterer) to use but it will catch bedding on fire.
Also what bedding to use for winter?? We have one side with straw (the nesting box/ water and feeder) and the other side with pine shavings (perches).
We have to insulate different than most others as we have to insulate from outside (cause rafters & how roof is designed).
Had to put tar paper covering vents and spaces in the roof to coop. I hated covering vents but at least windows can be opened. It was way to Cold still with vents open.
I have a plastic waterer with built in heater. It has a thermometer built in as well so it only turns on when it gets to a certain temp in the coop. I got it at Tractor Supply. I liked that I wasn't heating the water and using electricity when I didn't need to.
I use 6-8 inches of pine shaving on the floor. I picked what poop I could and would add more shavings as needed. All food and water is off the floor on cinder blocks. I only have SF so that's not too tall for them. If you have smaller birds use bricks or a 4x4 piece of wood. In spring I clean the whole thing out and switch to sand.
I don't have insulation in or on my coop. It's all wooden with vents on either end in the peaks. One vent is welded wire with old window screen over it to keep the snow out. The other has wooden louvers.
I don't use a heat lamp or supplemental light. I have a light out there that I could put a heat bulb in if needed. If it got to single digits I'd use a heat bulb but not for long. I do have bag balm on hand for my girls with larger combs and waddles. They can get frostbite.