The valley rafter is marked for a 12 in 17 pitch and then cut with a double bevel to fit into the ridge intersection.
Papering a roof valley.
To achieve a woven valley installation a roofing professional lays shingles in the valley and weaves them together.
Roll out the tar paper along the bottom edge of the roof.
Some homeowners prefer the consistent look that a woven valley provides.
On the common rafters the plumb cut is marked with a framing square for a 12 in 12 pitch 45 and cut square i e no bevel.
Roof valleys are troughs that discard runoff water where two sections of sloped roof meet.
Cut it to fit your roof if.
The three methods to shingle a roof valley.