The top joinery of both valleys when they meet on the same plane of roof is shown here.
How to replace a valley on a roof.
Stop nailing 6 inches from the center.
Begin by placing the replacement piece of flashing in the valley lining up the groove in the center with the middle of.
Place the new piece of sheet metal valley flashing in the valley with the raised center aligned with the center of.
Start at the lower end of the valley.
Lay one and two tab shingles as you near the valley so full size shingles will run across the valley.
Shingle the other side of the valley the same way.
Never try and work on a roof from a ladder as a.
I have my valley custom made with water trough to help with leaking b.
A properly flashed roof valley should have an ice and water shield installed with roofing felt being properly secured over the ice and water.
A scaffold tower has been used for access in this video.
Here s how to install new flashing in your roof valleys.
This video shows how to repoint a lead roof valley.
If the ice and water shield is missing then you will have to remove the shingles on both sides along the valley put ice and water shield in place and re shingle the roof.
Use a metal cutter to alter the length of the flashing to ensure it lines up with your roof s lower edges.