I've just had a vision of how to reduce the condensation problem .
What I know :- ( well think I know
).
Chickens getting damp lose body heat very quickly , they can take low temps down to those that actually freeze their combs providing it is dry.
Would the idea of putting in a ventilation block or three of say five square feet of triple wall hit & miss wooden slats on the outsides of the housing with 1/2 " chicken wire nailed on the outsides ( stop foxes trying to eat their way in ) be of any use ?
I think it would slow down the ventilation's airspeed and stop most sudden draughts .
If you had two low to the ground and two half sized one's high up the air would be about as dry as you can get.
Another thought was to actually skin the walls & roof but it does not make for air movement within the housing ..
Stand off by 2" hit and miss walling & put a raised roof say 3 inches above the existing roof, so there is a small air flow gap , for the apex make another stood off capping a bit above the stand off roof .
Our temp accommodation in Cyprus at the time of the Turkish invasion & a few months later had similar designs of air gaps that allowed air movement and was heaven to get into when it was 45 oC outside .
See what you guys & gals think , there may be something better to come out of the discussions.
I'll also check with some of my internet friends in Canada & the USA to see how they handle things w.r.t. condensation & super cold winters.