Roof Valley With Two Different Pitches

Open metal valleys also lack the aesthetic appeal of closed valleys.

Roof valley with two different pitches.

The other is to get the fascias to line up. Explore framing complexities that result when roofs of two different pitches intersect. This slope and skew calculator makes it easy by performing all of the necessary trigonometry for each hanger condition in the roof. Joining these two roofs poses two main challenges.

The piece that allows us to join the two different slopes is the pitch transition trim. We re going to install it over top of the panels that have already been installed on the lower slope. A sketchup model helps clarify how various rafters and framing components are assembled in an off angle hip and valley configuration. The valley area of a roof the straight lines formed when two different planes of the roof meet is a critical area that handles a tremendous amount of water run off.

First we should establish the pitch of both roof planes. Valleys are typically found where gable dormer roofs meet the main roof or when a house has angled wings or additions where two roof sections in different planes meet. Learn more about off angle roof framing. Blind valleys simplify framing to keep the porch roof framing as simple as possible we installed a structural ridge supported by posts at each end with the common rafters landing on top of the ridge.

We ll start with the knowledge that the main roof has an 8 12 pitch. Determining the slope and skew angles related to hip and valley beams can be a challenge made even more difficult when the roof slopes on each side if the hip or valley are different. Using a pitch measuring tool that i d made we also determined that the exact pitch of the shed roof was 3 1 2 in 12. As another benefit to the roofing professional open valleys are sometimes used to easily bridge the gap between roof faces of vastly different pitches.

One is getting the two differently pitched planes to meet at the hip or valley rafter. An open valley on the other hand doesn t look as good on valleys where the planes have different slopes.