How To Install Flashing On Roof Valley

Install synthetic roofing underlayment or felt paper according to manufacturer specifications and then install the first piece of valley flashing.

How to install flashing on roof valley.

Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. 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. Step 6 install the.

Many roofers cut the shingles across because they say it s safer. 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. Lap successive sheets of metal flashing a minimum of 12 inches and seal laps. No one of this affirmat.

Shingle the other side of the valley the same way. 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. 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. Step 5 begin installation.

Now nail this first flashing at both its far ends. Roof one side of the valley running the shingles across it. Install an underlayment centered in the roof valley. Stop nailing 6 inches from the center.

Remember to caulk the underside of the flashing with a sealant. In this video i show you how i do the valleys on a shingle roof.