Lloyd Spear wrote: > My best reply is that the Homosote boards will do no harm and you can use= > them if you wish. HOWEVER, and this is big...do not use them in a manne= > r that will impede upper ventilation. If the Homosote boards work to imp= > ede air movement from inside the hive to the outside, you are likely to w= > inter poorly. If you have a bench saw or even a chisel, put a "trough" or notch from the center of the board (which will be over the hole in the inner cover) to the notch in the inner cover. My notch is about 3/4 inches wide and at least 3/8 deep. That way you have both a ventilation hole and a way for the bees to get to the upper exit. Also remember to move the outer cover forward to insure the hole is open and accessible. Bill Truesdell Bath, ME