How To Install Roof Valley Flashing

Remember to caulk the underside of the flashing with a sealant.

How to install roof valley flashing.

Learn the three methods of shingling a roof valley the advantages and disadvantages of each how to choose valley flashing and how to shingle an open valley. Metal roof flashing installation. Step 6 install the. Drip edge metal valley flashing dormer chimney and kickout flashing are types of roof flashing that shed water away from the connections between roofs walls chimneys and other building assemblies.

Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing. Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles. Shingle the other side of the valley the same way. How to flash a metal roof.

Roof one side of the valley running the shingles across it. Architectural shingle installation is especially critical in roof valleys where iko recommends an open valley installation. No one of this affirmat. A quick step by step guide on how to flash a metal roof.

Lap successive sheets of metal flashing a minimum of 12 inches and seal laps. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. Step 5 begin installation. W type valley flashing is more rigid for handling so it stays straight and it stops waler rushing down one side of a roof from rushing back up the other side.

In this video i show you how i do the valleys on a shingle roof. Now nail this first flashing at both its far ends. 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. Install an underlayment centered in the roof valley.

Stop nailing 6 inches from the center.