I am restoring an 1832 built log cabin. Size is 30×44 feet, 9 ft. ceilings, 2×6 t&g SYP ceiling; thermal barrier on top of t&g, 10/12 pitch roof with a 30′ span. Roof is 2×8 rafters, 16″ O.C., wind rafters 16″ O.C., 5/8 thermal OSB decking, ice and water shield overlayment, Metal roof installed on 2×4 SYP sleepers, 2′ O.C. What type of roof ventilation fan would you reccomend. Am using a Trane VAC system. Help.
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