Transition Joining Two Roofs With Different Pitches

First we should establish the pitch of both roof planes.

Transition joining two roofs with different pitches.

The shingles may overlap to provide full coverage for the combined roof. The piece that allows us to join the two different slopes is the pitch transition trim. 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.

One is getting the two differently pitched planes to meet at the hip or valley rafter. Joining these two roofs poses two main challenges. 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.

Position the flashing between the two roof pitches. As a final touch cover the flashing with shingles. The other is to get the fascias to line up. We ll start with the knowledge that the main roof has an 8 12 pitch.

Before joining two roofs with different pitches you can temporarily remove the eaves trim and replacing it after completing joining the roofs. Where the porch roof extended over the shed roof we installed a 2x6 ridge that ran from the top of the. After that cut each of them to fit the length of the joined area. This allows water to flow off the upper panels out over the trim onto the lower panels and exits the roof at the eaves.

We re going to install it over top of the panels that have already been installed on the lower slope. The roof is now combined and you re now good to go.