How To Install Metal Roof Valley Flashing

Others start with a 3 inch wide.

How to install metal roof valley flashing. Apply an approximately 3 inch. Place a piece of sheet metal under the shingles to make sure you will not damage the flashing. Fold the top of the flashing over the ridge. Use 1 inch galvanized roofing nails.

Cut the bottom edge and fold it down over the drip edge. Install an underlayment centered in the roof valley. Use fasteners to attach the panel to the structure making sure that there is complete compression of the sealant. 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.

Snipping off the corners of. How to do it determine cuts. The top joinery of both valleys when they meet on the same plane of roof is shown here. I have my valley custom made with water trough to help with leaking b.

Lay the flashing down in the roof valley and start at the lower end of the roof. In this video i show you how i do the valleys on a shingle roof. Remember to caulk the underside of the flashing with a sealant. No one of this affirmat.

Use tape sealant between the valley trim and the panel. Make sure to cover the gap at the bottom of the raised ridge. Attach the flashing panel in place at the bottom. Recommended procedures of basic valley flashing installation.

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. Many roofers cut the shingles across because they say it s safer. Some roofers cut the shingles parallel to the flashing s center ridge. Make sure that the end of the flashing panel is perfectly in line with the edge of the roof.

Step 6 install the flashing.