Roofing A Valley With Flashing

Closed valleys or open valleys.

Roofing a valley with flashing.

Make sure to cover the gap at the bottom of the raised ridge. Fold the top of the flashing over the ridge. Next install a 36 inch wide strip of self adhering bituminous membrane in 10 to 15 foot lengths up the valley. 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.

Cut the bottom edge and fold it down over the drip edge. Lay one and two tab shingles as you near the valley so full size shingles will run across the valley. Remember to caulk the underside of the flashing with a sealant. Snap a chalkline 2 to 3 inches past the valley center on the top layer of shingles.

One of the details that varies between homes is the method of flashing the valley areas of the roof. Ensure ice and water protector has been installed along the valley first. To secure the roof valley flashing nail it down carefully. Recommended procedures of basic valley flashing installation.

Apply an approximately 3 inch. Only nail at the edges with only enough nails to. 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. To splice the pieces add roofing cement to the lower piece and install the upper piece with at least a six inch.

Stop nailing 6 inches from the center. Install an underlayment centered in the roof valley. Step 6 install the flashing. 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.

W valley flashing protects the critical area of your roof where two slopes come together to form a valley. Then starting at the base of the. There are two common methods for completing the flashing of a valley in a shingle roof system. Now nail this first flashing at both its far ends.

Shingle the other side of the valley the same way. Roof one side of the valley running the shingles across it. To understand what makes a valley either closed or open it is important to understand how a valley is constructed.