Jim quoted "Acquire two pieces of cedar shingle, about an inch wide and two pieces of lathe 7 1/2 inches long. Place the shingles along the sides of the lower brood chamber (using two brood chambers) with the thick end forward. " I use exactly the same pieces of shingles, but nail them to the underside of the inner cover, thick end forward. The only difficulty I see in putting them on the underside of a brood chamber is that then the chambers could not easily be reversed. I do not wrap. I have tried it, and it works fine, but no better than not wrapping. AFAIK the only advantage of wrapping in this cold climate (but not as cold as mid-Vermont) is in the spring the tar paper works great in front of the hives as weed/grass control! Upper ventilation is the key! Lloyd Lloyd Spear, Owner Ross Rounds, Inc. Manufacturers of Ross Rounds Comb Honey Equipment, Sundance Pollen Traps and Custom Printer of Sundance Labels. :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: -- Visit www.honeybeeworld.com/BEE-L for rules, FAQ and other info --- ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::