How To Install Metal Roof Valley Flashing

Now nail this first flashing at both its far ends.

How to install metal roof valley flashing.

Many roofers cut the shingles across because they say it s safer. Step 6 install the flashing. Place a piece of sheet metal under the shingles to make sure you will not damage the flashing. Use 1 inch galvanized roofing nails.

Make sure that the end of the flashing panel is perfectly in line with the edge of the roof. How to do it determine cuts. 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.

Apply an approximately 3 inch. Install an underlayment centered in the roof valley. Others start with a 3 inch wide. Cut the bottom edge and fold it down over the drip edge.

Fold the top of the flashing over the ridge. Make sure to cover the gap at the bottom of the raised ridge. Use fasteners to attach the panel to the structure making sure that there is complete compression of the sealant. In this video i show you how i do the valleys on a shingle roof.

The top joinery of both valleys when they meet on the same plane of roof is shown here. To splice the pieces add roofing cement to the lower piece and install the upper piece with at least a six inch. Attach the flashing panel in place at the bottom. Recommended procedures of basic valley flashing installation.

Some roofers cut the shingles parallel to the flashing s center ridge. No one of this affirmat. 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. Use tape sealant between the valley trim and the panel.

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.