How To Install Metal Roof Valley Flashing

Fold the top of the flashing over the ridge.

How to install metal roof valley flashing.

Some roofers cut the shingles parallel to the flashing s center ridge. Many roofers cut the shingles across because they say it s safer. Make sure that the end of the flashing panel is perfectly in line with the edge of the roof. Now nail this first flashing at both its far ends.

Remember to caulk the underside of the flashing with a sealant. To splice the pieces add roofing cement to the lower piece and install the upper piece with at least a six inch. Snipping off the corners of. 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.

In this video i show you how i do the valleys on a shingle roof. Lay the flashing down in the roof valley and start at the lower end of the roof. Use 1 inch galvanized roofing nails. Cut the bottom edge and fold it down over the drip edge.

Apply an approximately 3 inch. 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. I have my valley custom made with water trough to help with leaking b.

Attach the flashing panel in place at the bottom. How to do it determine cuts. Use fasteners to attach the panel to the structure making sure that there is complete compression of the sealant. 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. The top joinery of both valleys when they meet on the same plane of roof is shown here. No one of this affirmat. Make sure to cover the gap at the bottom of the raised ridge.

Others start with a 3 inch wide.