Some homeowners prefer the consistent look that a woven valley provides.
Papering a roof valley.
Begin your first row of tar paper with the bottom of the tar paper slightly hanging over the edge of the roof.
To achieve a woven valley installation a roofing professional lays shingles in the valley and weaves them together.
Woven valley shingle installation.
Roll out the tar paper along the bottom edge of the roof.
Roof valleys are troughs that discard runoff water where two sections of sloped roof meet.
The three methods to shingle a roof valley.
The valleys on many older houses comprise layers of roofing paper which can deteriorate over time.