Over Valley Roof

Nail down each valley shingle at least two inches 50 mm back from the chalk line.

Over valley roof.

Shingle the other side of the valley the same way. You can use a straight edge to achieve a straight cut. Over driving nails is always a. Begin to install roof shingles on either roof face.

Roof one side of the valley running the shingles across it. Before the installation of a shingle roof assembly the roofing contractor installs an underlayment over the entire roof deck. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. 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. Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface. When you reach the valley lay the shingles over the valley and trim the edges to the chalk line.

Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros. Before you reshingle a roof read our step by step guide for adding new shingles over old ones. Roof installation how to shingle a valley hd by roofrepair101 more about roofing at.