Appalachickens
Crowing
No worries, the hatch has a hardware cloth covering sandwiched into a double frame, so it’s secure.@Appalachickens In a word YES but...
You need also to worry about predators. Attach hardware cloth (1/2" x 1/2" 19 gauge) to the inside of your openings (all of them!!) immediately.
It is hard to say but the roost position MAY place them in a draft location. Test with strips of newspaper held in front of the roosts where they chickens are. If they flap you could have a problem but I doubt it. The temperatures you cite are like the tropics to chickens. You could drop the roosts a bit to counter that.
You also do not want rain to intrude and wet the inside of the coop. Easy solution is to prop outside top hinged flaps open so that rain is diverted to the ground.
I’ve also got HC over the vents along the side, and the entire run, including the roof is HC sandwiched between boards screwed together, with an extra layer of welded wire fencing along the bottom half and a 2’ HC apron. Nothing is getting in that coop!
Fortunately, I’ve had no problems with water. I keep the waterers and feeder out in the run. I live in a temperate rain forest so I was really careful about making sure rain couldn’t get in. The roof is plywood coated in an elastomeric roof sealant, then an adhesive roof underlayment and then metal panels. And the roof extends about four feet past the open end of the coop. The chickens have been in the coop since June and it stays bone dry.
I’ll try the draft test tomorrow. If there isn’t one at roost level, sounds like it’s fine to leave the hatch all the way up?