I am in the process of building an 8x10 shed. I have all four walls framed and up (2x4, 16"oc construction). I have not installed the siding yet (T-111). I am preparing to build the roof, and had a couple of questions. I am planning to nail 2x6 rafters (24" oc) to a 2x8 ridge beam that will run parallel to the 10' walls. I will also use 3 2x6 collar ties (one on each end, and one in the middle) to prevent spreading. I plan to use plywood sheathing (3/4"), roofing paper, and asphalt shingles. No ridge vent is planned (I will install gable vents), and I am planning on the peak of the roof to be 2.5 to 3' above the top of the 6.5' high walls. Here are my questions:
1. Will this roof be sufficient? My township does not specify requirements, just that it be a "safe" structure. I live on Long Island, and snow can be as much as 2-3' in the worst years. 2. How can I create a small (8") overhang at the 'ends' of the roof (along the 8' walls perpendicular to the ridge)? I don't think I can just let the sheathing overhang the last rafters, for fear of warping, etc. I had thought of nailing 2x4s or 2x6s to the outside of the last rafter to provide a nailing surface for the sheathing, but was concerned about sagging. What is the best method for creating this overhang without worrying about the edges of the roof curling, sagging, etc?