Re: Winter hive wraps...questions
What is required for winter is very climate specific. Winter in central Alberta is much different than winter in Vancouver. Think your main issue is high humidity and mositure after ensuring adequate winter food supply.
Black building paper provides a wind barrier but I think without insulation between it and the hive, will warm the interior too much and will fool the bees into flying when ambient air temp is too cold. It does breathe somewhat. See attached link.
Close any screened bottom boards and provide adequate ventilation by bottom entrane and top exit vents such as notch in inner cover lip, pop sicle sticks under inner cover, 5/8 inch round hole, quilt box, etc.
No black building paper wrap but a wind break a short distance a way from hive. South exposure so sun does hit hive directly( if you ever see the sun in Vancouver in the winter!!!!)
To control condensation, I'd place a piece of styrofoam under the outer cover. Moisture condenses first on coldest surface and you don't want that to bee over head.
I would seriously consider a quilt box. If moisture does condense the wood shavings will absorb it and with vent holes in the sides of the quilt box, it should get exhausted.
If you always do what you always did, you'll always get what you always got!