How To Roof Different Roof Transition

This is a fairly common roof detail.

How to roof different roof transition.

See the illustration below. The following is similar to a membrain that i did on my current home transition it has been dry for 3 winters so far. Place the 2 by 4 inch piece of lumber along the center of the flashing. Position the flashing between the two roof pitches.

Slide the right edge of the flashing under the highest roof pitch. Pitch transitions are a common roof detail. 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. The roof plane goes from one pitch to a lower pitch.

A roof pitch transition is a line in the roof plane that changes pitch. This video shows how to install slope transition trim with standing seam panels. We see this quite frequently in log home roofs with porches for example. 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.

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.