How To Install Metal Flashing Roof Valley

Attach the flashing panel in place at the bottom.

How to install metal flashing roof valley.

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. Install synthetic roofing. Shingle the other side of the valley the same way.

Make sure that the end of the flashing panel is perfectly in line with the edge of the roof. Fold the top over the roof ridge and cut the bottom along the drip edge metal. Remember to caulk the underside of the flashing with a sealant. I have my valley custom made with water trough to help with leaking b.

Then install a non corrosive metal valley flashing of 24 minimum width lap successive sheets of metal flashing a minimum of 12 inches and seal laps. Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles. Stop nailing 6 inches from the center. Now nail this first flashing at both its far ends.

First clean the debris out of the valley including sawdust nails and whatever else is in there. Use 1 inch galvanized roofing nails. With a clean valley you can lay down some peel and stick roofing membrane. Recommended procedures of basic valley flashing installation.

Step 6 install the flashing. Install valley battens on both ends of the roof valley then attach first flashing 3 4 inches over the roof flange and another 3 4 inches over the fascia if any is present. Use fasteners to attach the panel to the structure making sure that there is complete compression of the sealant. Apply an approximately 3 inch.

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. Roof one side of the valley running the shingles across it.