An excellent strategy is to minimize the number of places where wires, conduits, supply cables, electrical receptacles, and electrical devices must penetrate the air barrier. Roof framing with unheated attics. One of the biggest problem areas in most insulated ceilings is at the eaves where conventional roof tresses or rafters do not permit full-thickness insulation. Inadequate insulation and blocked soffit vents can cause condensation and mold at cold comers. Not allowing enough room for roof venting can also cause moisture problems in the roof system.
Advanced roof framing techniques can solve the problem.
Canadian Home Builder's Association Builder's Manual 1994. Improve Energy Efficiency by Preventing Air Leakage Description Air leakage is the unintended infiltration of air through the building envelope. If a house is not well sealed, it costs more to keep comfortable. In fact, loosely constructed houses often are difficult to keep comfortable, due to cold drafts, outside noise, and unwanted humidity. These can be minimized through caulking and sealing.