Start at the lower end of the valley.
How to replace a valley on a roof.
Use a metal cutter to alter the length of the flashing to ensure it lines up with your roof s lower edges.
Shingle the other side of the valley the same way.
Roof one side of the valley running the shingles across it.
Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles.
Begin by placing the replacement piece of flashing in the valley lining up the groove in the center with the middle of.
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.
Stop nailing 6 inches from the center.
A scaffold tower has been used for access in this video.
Never try and work on a roof from a ladder as a.
Lay one and two tab shingles as you near the valley so full size shingles will run across the valley.
Here s how to install new flashing in your roof valleys.
Cut each side of the flashing at the lower end to conform with the corresponding edges of the roof using sheet metal.
This video shows how to repoint a lead roof valley.
The top joinery of both valleys when they meet on the same plane of roof is shown here.