Was wondering if you wrap your hives with felt paper or insulate the hive bodies in some way or do nothing?
I found plastic sign board at Lowes today.
If I cut a piece of rigid foam to fit inside the telescoping cover and then add a piece of sign board, that should keep the cold from condensing some of the moist air under the cover.
And keep the bees from chewing at it while they have access to granulated sugar on top of the inner cover.
Also plan to have a top entrance open.