I would put floor height vents on at least the west and south sides if not a few on all sides. This will get you better air flow during the hottest months of summer and not limit where the air comes from. Doesn't have to be vented the entire length of each wall if you don't want, just some spaced out vents all around depending on where your doors are at. But that way you'll take advantage of breeze from any direction that can help when it is so hot and still.Up for discussion...
I would really like a Woods style chicken coop but I don't think it would be feasible for my situation. This is what I have come up with... if I'm ever able to get my custom coops built. Speaking of custom, if there's something I have not thought of (outside of the basic necessities) please chime in. Dragon Lady, would one of your double walled nesting boxes work with this situation? I'm thinking I would put it up high as my birds are constantly looking at the roof of my current "barn" and wondering if they can get any higher. If I could make a cozy place for them to sleep and still have lots of ventilation without risking frost bite, that's what I will do.
First up: The western exposure. We get lots of wind here coming from every direction except east and yet occasionally, it comes from the east too. So, ventilation at the floor level on the west side.
Each of the windows in the building will have covers available.
Next up: Eastern exposure. We only get 5 inches of precipitation here per year so having the roof open this way will not present any moisture issues. It dries quickly when it does rain/snow.
I plan to have a deep litter set up so the air coming in would sweep over the litter, keeping it dry and go up and out the roof vent on the eastern side. This should provide a warm pocket at the top of the western wall, especially if I can put some kind of box for them to snuggle together up there. Of course that would mean building ramps as a means to get way up there. Not a problem.
Anybody have any comments? suggestions? I'm all ears.
We have floor height vents and made "storm flaps" for them using 1/4" siding/plywood attached by hinges. Using an eye screw in the wall above the vent and eye bolt on the vent flap, we use rope/chain to raise the flap up to allow air flow. But this also allows the flap to be slightly tilted over the vent, providing cover from sideways-driving rain as well as heavy winds while still getting good air flow. When it is cold, we just take the chains of the flaps and let the flaps hang down. Because they are not secured, they hang a little ways off the vents so air gets into the coop in winter without the heavy cold wind just blowing straight through.
The air flow in the diagram isn't going to be quite correct. Air will flow in from the vents on the floor and it will flow in from eaves, but you aren't going to get as much air flow out through the eaves because of the roof slope. Hot air rises and will enter from the eaves and accumulate under the peak of the roof. I would recommend that you don't put the roofing panels all the way together. Leave a gap at the top so the roofing panels do not meet at the top, leaving a bit of a gap between the end of the roofing panel and the ridge beam. Then place a ridge cap along the top that extends farther out than the gap on top of your roofing panels. This will let more air flow up from the bottom of the roof, escaping out the top instead of hot air getting trapped at the top in the summer and still give protection in the event of rain.
This method is how we have ours set up with air flowing in from floor vents and under the eaves of the roof, escaping out the top. We use hardware cloth over the roof rafters, vents, windows for predator deterrence. The windows also have flaps that can be lowered for winter/bad storms like the vents. Works well with our 100+ degree, 60+% summer weather as well as our below freezing winter weather.