Install Valley Flashing Metal Roof

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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. Make sure that the end of the flashing panel is perfectly in line with the edge of the roof. Some roofers cut the shingles parallel to the flashing s center ridge.

Use fasteners to attach the panel to the structure making sure that there is complete compression of the sealant. Low slope roofs slope less than 3 12 use tape sealant between the valley trim and the panel. With a clean valley you can lay down some peel and stick roofing membrane. Apply an approximately 3 inch.

Lay the flashing down in the roof valley and start at the lower end of the roof. Place a piece of sheet metal under the shingles to make sure you will not damage the flashing. Others start with a 3 inch wide. Step 6 install the flashing.

Use 1 inch galvanized roofing nails. I have my valley custom made with water trough to help with leaking b. Fold the top over the roof ridge and cut the bottom along the drip edge metal. Remember to caulk the underside of the flashing with a sealant.

Recommended procedures of basic valley flashing installation. Now nail this first flashing at both its far ends. Many roofers cut the shingles across because they say it s safer. In this video i show you how i do the valleys on a shingle roof.

Install an underlayment centered in the roof valley. Install synthetic roofing. Best practices for sealing the metal roof valley vary based on the slope of the roof. Attach the flashing panel in place at the bottom.

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