Re: insulating scenario
You make a good point Ace, that is why this topic can be frustrating. A beekeeper must look at their own winter weather conditions and make their own determination as to what is needed, but what you just stated applies to all, we must find that correct balance between heat loss through ventilation and heat retention, whether that is just the 3/4" walls of the hive or adding something to the outside of the hive to better protect the bees.
I did a winter study last year with thermometers placed inside and outside of a hive and a piece of plexiglass for the inner cover to observe temperatures and condensation in order to better determine what was happening inside the hive, during this study I discovered what was the best way to set up my hives for winter in the area in which I live. I would encourage everyone to do a little experimenting for themselves this winter because what is the best wintering method for me would no doubt not suit someone who lives in Canada.
Bill...in Southeast Ohio Zone 6A, Never look down on anybody unless you are helping them up