Quote Originally Posted by Trog View Post
All on nationals; the nucs had dummy boards either side of the brood frames and polystyrene in all empty spaces and above crown board. My brood tends to start on the sunny side rather than in the middle.
I use double brood in winter, 7 in each box with dummy boards at the side & put insulation down the other side of the dummy boards and on top of the crown board- They wintered great. Mine also tend to build up on one side, usually the east. Probably because it usually starts raining her by lunch time .