How To Tin A Roof Valley

Lay one and two tab shingles as you near the valley so full size shingles will run across the valley.

How to tin a roof valley.

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. Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles. Use fasteners to attach the panel to the structure making sure that there is complete compression of the sealant. Only nail at the edges with only enough nails to.

Ensure ice and water protector has been installed along the valley first. Roof one side of the valley running the shingles across it. Use tape sealant between the valley trim and the panel. I have my valley custom made with water trough to help with leaking b.

To secure the roof valley flashing nail it down carefully. To splice the pieces add roofing cement to the lower piece and install the upper piece with at least a six inch. Fold the top of the flashing over the ridge. Make sure to cover the gap at the bottom of the raised ridge.

Stop nailing 6 inches from the center. The top joinery of both valleys when they meet on the same plane of roof is shown here.