Roofing A Valley With Flashing

To secure the roof valley flashing nail it down carefully.

Roofing a valley with flashing.

Closed valleys or open valleys. Only nail at the edges with only enough nails to. Apply an approximately 3 inch. W valley flashing protects the critical area of your roof where two slopes come together to form a valley.

Now nail this first flashing at both its far ends. Recommended procedures of basic valley flashing installation. If eaves flashing is used it should cross the valley centerline each way and be installed before the valley underlayment see eaves flashing discussed in roofing underlayment best practices. Step 6 install the flashing.

To splice the pieces add roofing cement to the lower piece and install the upper piece with at least a six inch. Ensure ice and water protector has been installed along the valley first. Shingle the other side of the valley the same way. 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 starting at the base of 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. Roof one side of the valley running the shingles across it. When properly installed w valley flashing will reliably channel run off water down the roof and into the gutter.

Fold the top of the flashing over the ridge. Cut the bottom edge and fold it down over the drip edge. Stop nailing 6 inches from the center. To understand what makes a valley either closed or open it is important to understand how a valley is constructed.

Next install a 36 inch wide strip of self adhering bituminous membrane in 10 to 15 foot lengths up the valley. Make sure to cover the gap at the bottom of the raised ridge. One of the details that varies between homes is the method of flashing the valley areas of the roof. 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. There are two common methods for completing the flashing of a valley in a shingle roof system. 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.