Small coop/ tractor questions

[Fire]

Im building a small coop 4x3 elevated with 2 nest boxes on the outside. It has a gabled roof and the back opens to clean it out. Ive got the frame, roosts and nestboxes done. Im a little unsure how much ventilation I need. I was going to make the peaked parts fold open but thats right on the level of the roost. I got to thinking if it was summer and I had them open the birds would be right in the vent so if a storm popped up or something they may get wet. Would I be better off with some kind of a ridge fan and vents on the bottom? Any other ideas for ventilation. My roof is going to be recycled tin. I can still put 1/4 plywood under it if you all think just the tin would be too hot.
Thanks

 

[faykokoWV]

what part of the country are you in and what kind of summer and winter temps do you have?

 

[Fire]

I live in NW Missouri we have hot humid summers and cold winters. Not uncommon to have days over 100 degrees with 90% humidity and in winter to get below zero a few times a year.

 

[faykokoWV]

I'm in WV and we left a smalll gap between the sides of the coop section and the roof. Because its a tractor, we move it depending on weather conditions. We can move to shaded area if too hot or to a leeward side of a building if windy and stormy. We used the corrugated plastic roofing because its cheaper than tin here and didn't rust. I think it might weigh less too.

you might want to make your ventilation at the top, like a ridge vent so they aren't right in the draft, or lower your roost if possible