Flashing Where Two Roof Lines Meet

Val ley flashing protects the valleys where two roof planes meet.

Flashing where two roof lines meet.

Position the flashing between the two roof pitches. Then reshingle sliding metal step flashing behind the fascia board the trim behind the gutter. Now nail this first flashing at both its far ends. Remember to caulk the underside of the flashing with a sealant.

If you don t direct water from the roof into. 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. Slide the right edge of the flashing under the highest roof pitch. This material is available with a v or w shaped profile and is placed over the top of the building felt before the roof s finishing material is installed.

Open valleys have metal flashing to protect this critical area of the roof. Ground zero for roof rot is often where roofs meet walls. Place the 2 by 4 inch piece of lumber along the center of the flashing. Step flashing protects the joints between the roof deck and chimneys or dormers.

The valley flashing laid over the joint where the two roofs meet should overlap the step flashing at least 2 in. 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. Two ways to flash roof edges.