Gable Joining Two Roofs With Different Pitches

Explore framing complexities that result when roofs of two different pitches intersect.

Gable joining two roofs with different pitches.

This technique is beneficial particularly in home expansion. A sketchup model helps clarify how various rafters and framing components are assembled in an off angle hip and valley configuration. Joining two roofs of different pitches blind valleys simplify framing. Where the porch roof extended over the shed roof we installed a 2x6 ridge that ran from the top of the.

The front gable d f g is 18 feet wide and has a rise of 8 feet. It will be noticed that the left gable has two different pitches. To keep the porch roof framing as simple as possible we installed a structural ridge. This plan shows as much irregularity as can be desired and as much as is generally encountered in actual practice.

We ll start with the knowledge that the main roof has an 8 12 pitch. Joining two roofs with different pitches is a method that exists in the building and construction world. Box gable roof a type of hip roof where each side includes two different sloping angles with the lower angle much steeper than the upper angle. That sounds worse than what you have.

The last gable j i h is 21 feet wide and has a rise of 8 feet. The piece that allows us to join the two different slopes is the pitch transition trim. One is getting the two differently pitched planes to meet at the hip or valley rafter. The other is to get the fascias to line up.

Joining these two roofs poses two main challenges. This allows water to flow off the upper panels out over the trim onto the lower panels and exits the roof at the eaves. One idea i had was to sort of combine hip and gable roofs by doing the two roof peaks on the left the lower pitches with a little shed roof going across the entirely of the gable right above the garage doors for example and making doing a traditional rake gable edge on the porch entry. We re going to install it over top of the panels that have already been installed on the lower slope.