Use tape sealant between the valley trim and the panel.
How to tin a roof valley.
Cut the bottom edge and fold it down over the drip edge.
To secure the roof valley flashing nail it down carefully.
Make sure to cover the gap at the bottom of the raised ridge.
Shingle the other side of the valley the same way.
Use fasteners to attach the panel to the structure making sure that there is complete compression of the sealant.
Ensure ice and water protector has been installed along the valley first.
Fold the top of the flashing over the ridge.
Lay one and two tab shingles as you near the valley so full size shingles will run across the valley.
I have my valley custom made with water trough to help with leaking b.
Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles.
To splice the pieces add roofing cement to the lower piece and install the upper piece with at least a six inch.
The top joinery of both valleys when they meet on the same plane of roof is shown here.
Roof one side of the valley running the shingles across it.
Then starting at the base of the.