How To Install Metal Roof Valley Flashing

Make sure that the end of the flashing panel is perfectly in line with the edge of the roof.

How to install metal roof valley flashing.

Now nail this first flashing at both its far ends. Apply an approximately 3 inch. No one of this affirmat. Use tape sealant between the valley trim and the panel.

Use fasteners to attach the panel to the structure making sure that there is complete compression of the sealant. Fold the top of the flashing over the ridge. Remember to caulk the underside of the flashing with a sealant. How to do it determine cuts.

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. To splice the pieces add roofing cement to the lower piece and install the upper piece with at least a six inch. Use 1 inch galvanized roofing nails. Recommended procedures of basic valley flashing installation.

Place a piece of sheet metal under the shingles to make sure you will not damage the flashing. Many roofers cut the shingles across because they say it s safer. I have my valley custom made with water trough to help with leaking b. 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.

Step 6 install the flashing. Lay the flashing down in the roof valley and start at the lower end of the roof. 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. Some roofers cut the shingles parallel to the flashing s center ridge.

Others start with a 3 inch wide. Snipping off the corners of. The top joinery of both valleys when they meet on the same plane of roof is shown here. Cut the bottom edge and fold it down over the drip edge.

In this video i show you how i do the valleys on a shingle roof.