Sorry just a quickie, when you say roughly to allow 4-5 with asphalt does that include the stripping and sheathing at all? I am thinking it does not as I understand sheathing cannot be seen until stripped. So about 10 for a metal roof. What are your thoughts on metal roofs in a Maine climate a mile or so from the sea? What do most cape homes have on their roofs? What are other good options? Slate, wood?