Roof one side of the valley running the shingles across it.
How to tin a roof valley.
Use tape sealant between the valley trim and the panel.
Ensure ice and water protector has been installed along the valley first.
Lay one and two tab shingles as you near the valley so full size shingles will run across the valley.
To secure the roof valley flashing nail it down carefully.
Make sure to cover the gap at the bottom of the raised ridge.
Cut the bottom edge and fold it down over the drip edge.
To splice the pieces add roofing cement to the lower piece and install the upper piece with at least a six inch.
Shingle the other side of the valley the same way.
Fold the top of the flashing over the ridge.
Stop nailing 6 inches from the center.
Steep slope roofs slope greater than 3 12 cut the panels at an angle for the valley then bend the hem end of the panel and hook it with a cleat.
Only nail at the edges with only enough nails to.
Then starting at the base of the.
The top joinery of both valleys when they meet on the same plane of roof is shown here.