The plans I based this on had a considerably smaller vent. One. Making matters worse it had windows. Glass windows. An absolute nightmare of cleaning and heating waiting to happen. I quickly nixed the windows and instead of just one vent on one side I put in two larger vents, one on each side. I also reduced the depth of the roost by about 40% to save on materials. This also means that the larger vents I installed are way more effective than they need to be. In fact I might have to build vent covers for extreme winter night lowes but that is for another day.
The only time hens will be in there are
overnight (temps are never over 86 overnight in this area) or when laying eggs.
If they are laying eggs they won’t be in there long.
they are broody. Any heat might help break them of that.
Bonus: the original plans had insulated walls with foam board. The combination of tiny vent, two windows and insulation would have cooked everything inside.
TL:DR The hotter (less dense) air will rise. It will leave via the vents or get tapped up much higher than the birds or the vents. I’m not worried at all. Adding more vents would be trivial but are ultimately unnecessary.
Correct. Which is why I installed vents.
The plans I based this on had a considerably smaller vent. One. Making matters worse it had windows. Glass windows. An absolute nightmare of cleaning and heating waiting to happen. I quickly nixed the windows and instead of just one vent on one side I put in two larger vents, one on each side. I also reduced the depth of the roost by about 40% to save on materials. This also means that the larger vents I installed are way more effective than they need to be. In fact I might have to build vent covers for extreme winter night lowes but that is for another day.
The only time hens will be in there are
Bonus: the original plans had insulated walls with foam board. The combination of tiny vent, two windows and insulation would have cooked everything inside.
TL:DR The hotter (less dense) air will rise. It will leave via the vents or get tapped up much higher than the birds or the vents. I’m not worried at all. Adding more vents would be trivial but are ultimately unnecessary.