Intersecting Roofs Different Pitch

I have a farmhouse design i am working on where i want my main body roof to be 6 12 and a couple gables facing the front to be 12 12.

Intersecting roofs different pitch.

With this method and a framing square you can join roofs of different pitches and still have perfectly aligned equal width soffits a builder describes how he uses a framing square and full scale layout to solve this tricky problem. We wanted to make the porch roof as steep as possible while keeping the peak of the roof below the wall to roof intersection at the top of the shed roof. Their steep pitch also lets water run off easily ultimately reducing the need for additional waterproof roof treatments that lower pitched roof types require. A sketchup model helps clarify how various rafters and framing components are assembled in an off angle hip and valley configuration.

To find the length of the valley rafter on the right side of the front gable on the line k l square up the rise of the roof from l to m connect m with k and we have the length of the valley after. After a taking some measurements and doing a bit of ciphering we established that the steepest pitch we could use on the porch roof was 4 in 12. Their steeper pitch also evokes a more minimal design and the materials used to make a skillion roof including metal tend to be slick unlike the bulkier shingles or tiles of a classic. Explore framing complexities that result when roofs of two different pitches intersect.