I use Cattle Panels.
I live in Virginia, so we have cold winters, I face my coops South because of the wind. They have plenty of ventilation, I normally do a wood frame, with a panel bent over top covered in a tarp. I also give them a little yard all year that they can go out in rain or snow if they want too. January-March are the worst months here, I usually lock my chickens up in really bad weather.
I would like to build a chicken coop, made out of cattle panels, with a tarp over it that would survive the snow, I figured I'll have to have a pointed roof not just a flat one, but I don't know if the panels will hold up to snow? I'm going to put tee-posts around it and tie the coop to them, so the wind won't move it. Any ideas of how to make it hold up to the snow? I'm just afraid it will collapse.
To make it a bit easier. This will hold three cattle panels. Which are different from horse panels. CAttle r about 20$ and horse is about 50$.
This is the shell and yes they are 16' long some are only three feet wide some are four. I use the four.
For a better view on how it looks. Hope this helps. A lot more info on my forum called building paradise for the birds. A day to day thread dedicated to my grandpa about the life of the bird man. Check it out and hope to see u there.