View attachment 1240032Here are the pics you asked for. I have an inner coop/roost that you can not see in these photos, it's inside the main covered area, it is well ventilated but also off the ground and insulated and has windows. I only close it down for brief periods in the winter if the temps drop suddenly. we have 40 degree swings at times, though it never gets as cold as where you are. the upper area that you see here that has the wood paneling is a second floor where I grow out meet birds twice a year. they are off the ground and I use about 6" of pre-composted wood chips/leaves/dirt for their litter. all litter eventually ends up going through an insulated composter that gets up to 130f.
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In the above photo, you can see how I do the seams. in the beginning I was using screws and washers with the idea that they would be permanent and then found that it was getting expensive so I switched to U-nails/fencing staples but you can see the occasional screw and washer. my favored install approach now is to take one of the screws and washers and re-use it over and over, nailing the first u-nail, then taking the screw and washer and going up a few feet, and putting it through a section of fence at a 45 degree angle so that as I screw it in, it adds tension to the fencing. if you add too much tension, it will pop the solder and separate or even break a link of the fence, but as you get the hang of it, you learn how to gauge the tension needed to get the fencing nice and flat before nailing it down every 3" or so. Also, you have two main options with the fencing where it goes into the ground, you can dig down about two feet at a 45 degree angle away from the coop and bury that much fencing, so that any vermin who try and dig down, loose ground as they go and give up. backfilling with 5/8th's gravel also helps deter the diggers, or you can go all the way under the coop with the fencing. going forward, I recommend going all the way under the coop, as well as putting fairly deep eaves around the edges, say 12", to keep the water away from the ground where the fencing goes in, otherwise it begins to rust prematurely.
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in the above photo, you can see that I enveloped the entire coop in the framing stage, including the ceiling, so that the hardware cloth is continuous... there is no more than a half inch gap anywhere along the outside.
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In the above photo you can see a close up of the washer and screw just to give you an idea of what I am talking about. I just wish I had a video of the process I now use where the screw and washer act as a "come-along", but hopefully you get the idea.
View attachment 1240028 In the above photo, you can see that I use two heavy duty latches on each door. my doors are tightly fitted to assure no rat or coon or any other vermin can enter. I generally do not have to worry about mice, chickens actually will attack mice and they just do not pose the kind of issues that rats can.
View attachment 1240027 In the above photo you can see how I applied a translucent roof to allow light to come in and added windows to the side. in northern climates especially, light is very important to maintaining activity and ovulation through the winter.
hope this helps give you some ideas!