Transition Joining Two Roofs With Different Pitches

Where the porch roof extended over the shed roof we installed a 2x6 ridge that ran from the top of the.

Transition joining two roofs with different pitches.

The roof is now combined and you re now good to go. We ll start with the knowledge that the main roof has an 8 12 pitch. The shingles may overlap to provide full coverage for the combined roof. Take a piece of the lumber and then slip it under the roof pitch that has a higher position.

We re going to install it over top of the panels that have already been installed on the lower slope. Prepare two pieces of lumber with a 1 1 inches width. Before joining two roofs with different pitches you can temporarily remove the eaves trim and replacing it after completing joining the roofs. The piece that allows us to join the two different slopes is the pitch transition trim.

Position the flashing between the two roof pitches. One is getting the two differently pitched planes to meet at the hip or valley rafter. Place the 2 by 4 inch piece of lumber along the center of the flashing. Slide the right edge of the flashing under the highest roof pitch.

Joining these two roofs poses two main challenges. Joining two roofs of different pitches blind valleys simplify framing. To keep the porch roof framing as simple as possible we installed a structural ridge. The primary function of these two items is for sealing the edges of the roof.

The other is to get the fascias to line up. After that cut each of them to fit the length of the joined area.