How To Tin A Roof Valley

Make sure to cover the gap at the bottom of the raised ridge.

How to tin a roof valley.

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. I have my valley custom made with water trough to help with leaking b. The top joinery of both valleys when they meet on the same plane of roof is shown here.

Only nail at the edges with only enough nails to. Fold the top of the flashing over the ridge. Shingle the other side of the valley the same way. Cut the bottom edge and fold it down over the drip edge.

Stop nailing 6 inches from the center. Use fasteners to attach the panel to the structure making sure that there is complete compression of the sealant. Use tape sealant between the valley trim and the panel. Lay one and two tab shingles as you near the valley so full size shingles will run across the 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.