Install Valley Flashing Metal Roof

Use fasteners to attach the panel to the structure making sure that there is complete compression of the sealant.

Install valley flashing metal roof.

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. 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. No one of this affirmat. Make sure that the end of the flashing panel is perfectly in line with the edge of the roof.

Apply an approximately 3 inch. Best practices for sealing the metal roof valley vary based on the slope of the roof. Some roofers cut the shingles parallel to the flashing s center ridge. Step 6 install the flashing.

Others start with a 3 inch wide. Many roofers cut the shingles across because they say it s safer. The top joinery of both valleys when they meet on the same plane of roof is shown here. Lay the flashing down in the roof valley and start at the lower end of the roof.

Fold the top over the roof ridge and cut the bottom along the drip edge metal. 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. Install an underlayment centered in the roof valley.

Attach the flashing panel in place at the bottom. Place a piece of sheet metal under the shingles to make sure you will not damage the flashing. Install synthetic roofing. Use 1 inch galvanized roofing nails.

In this video i show you how i do the valleys on a shingle roof. Recommended procedures of basic valley flashing installation. I have my valley custom made with water trough to help with leaking b. How to do it determine cuts.

Low slope roofs slope less than 3 12 use tape sealant between the valley trim and the panel.