It partially depends on the materials you’re using. This ensures that they are as close to the same size as possible. When talking about framing a shed roof with rafters, you’ll first need to know how steep your roof is – in other words, what is the pitch or slope of your roof? For any DIYer or a homemaker, the most important points to consider while making a decision is the budget constraint. Both of these are for light roof loads. Learn how to measure and cut out roof rafters for a lean to shed. Another way to look at it is from the beginning of the birdsmouth cut to the opposite, interior facing edge. $100. 2×6 shed roof rafters are enough for nearly any type of shed a homeowner wants to build. Again, make sure to consult local codes. 8' high. The tin roof (lean-to) will run the 16' length. We will be looking at roofs that have a pitch of 3:12 or greater. Easy Rafters is designed to calculate shed roofs that are framed to a ledger board nailed against a vertical wall, not freestanding shed roofs supported by walls at both ends. I made the rafters, and got them up today. There is a slight drop off in strength when using SPF for shed roof rafters, but in most areas, you only have one option when you go to your local home reno store, so at least know what you are buying. Use rafter hangers to secure the rafters to the ledger boards. SYP 2×6 rafters at 24” O.C. Treated posts (Side post 8’ on center, gable end posts 8’ or 10’ on center) 24’ wide barns - 4x6 treated posts 8’ on center. How much pitch do I need for a lean to roof? If you had a 12×12 shed with a gable roof, that would mean 26 rafters, which is a lot. Is it cheaper to buy a shed or build one? By using our site, you agree to our. If you live in an area that requires a shed roof rafter to support a heavy load, then an SPF rafter can only span 7 ⅔’. For light load roofs, 24” o.c. Structures such as sheds or barns can be frames with rafters every 24." {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/8\/87\/Build-a-Lean-to-Shed-Step-1.jpg\/v4-460px-Build-a-Lean-to-Shed-Step-1.jpg","bigUrl":"\/images\/thumb\/8\/87\/Build-a-Lean-to-Shed-Step-1.jpg\/aid8883833-v4-728px-Build-a-Lean-to-Shed-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"