Valley Joining Two Roofs With Different Pitches

3 12 and 6 12 is 4 5 17.

Valley joining two roofs with different pitches.

We ll start with the knowledge that the main roof has an 8 12 pitch. Differing pitch valley vaulted. Unequal pitch roof intersections have always been head scratchers. At the low end of the valley the subfascias of the two roofs are mitered with a block filling in the roof framing.

Joining two roofs with different pitches is a method that exists in the building and construction world. This technique is beneficial particularly in home expansion. John carroll takes the mystery out of it. Slide the right edge of the flashing under the highest roof pitch.

This allows water to flow off the upper panels out over the trim onto the lower panels and exits the roof at the eaves. The other is to get the fascias to line up. First we should establish the pitch of both roof planes. I was taught to split the different pitches thus coming up with the hip pitch.

Joining two roofs of different pitches. How does the 17 12 idea fit in here. One is getting the two differently pitched planes to meet at the hip or valley rafter. The piece that allows us to join the two different slopes is the pitch transition trim.

The problem has always been the height the rafter sits off the top plate to line up with both roof planes. Joining these two roofs poses two main challenges. Position the flashing between the two roof pitches. We re going to install it over top of the panels that have already been installed on the lower slope.

Place the 2 by 4 inch piece of lumber along the center of the flashing. The only real problem arises if you have plain tiles the small 10 5 x 6 5 inch on the roof. I have only built one roof where a hip was joining two different pitch roofs at the corner of a house. Sometimes valley tiles and bonnet hips are used with these but it must be the same.

It is possible to join different roof pitches but only if you use lead in the valley and ridge hip tiles on the hips. Then string a line through and see how it planes in with the two roofs. Discussion in carpenters talk started by jimoz jul 7 2018. This is the normal method for most tiles anyway.

Am on a job at the minute with as per title different pitch roofs connecting and vaulted ceiling. Would like to know how you cut the valley rafter when you have two different pitches on intersecting roofs.