Roof Valley Tar

Woven closed cut and open.

Roof valley tar.

Clear any debris in the roof valley and surrounding area. The reason why the roof valley is such a sensitive area has to do with all the rainwater and or melting snow that accumulates and flows through the valley on its way into the gutters. A roof valley is formed where two roof slopes meet. Your choice of valley installation method is critical because when improperly installed valleys are risks for serious leaks.

Essentially there are three main ways to shingle a roof valley. Lay shingles and mark center roof one side of the valley running the shingles across it. This is how i paper my vallies. Built up roofs or burs also called a tar and gravel roof is a well established and popular style of flat roof that is made up of alternating layers of roofing felt or fiberglass and asphalt that is applied with heat which combine to make a long lasting sturdy roofing system.

Take a close look at how i paper the 30 in the center of the valley. Move to the highest end of the valley and work your way down cleaning shingles from both sides of the valley whether they re damaged or not. I swear it is the fastest way out there. Water collects in a valley to flow off the roof.

Take measurements of your roof flashing most flashing is 14 inches wide but yours may vary. Stop nailing 6 inches from the center. The valleys on many older houses comprise layers of roofing paper which can deteriorate over time. Roof valleys are troughs that discard runoff water where two sections of sloped roof meet.