Flashing Where Two Roof Lines Meet

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

Flashing where two roof lines meet.

Then reshingle sliding metal step flashing behind the fascia board the trim behind the gutter. While some skylight manufacturers include flashing in their products sometimes roofing professionals have to create it or purchase it separately. The edge of the roof has thin metal flashing that helps water drip off the roof without damaging the home or causing a leak. Two ways to flash roof edges.

If you don t direct water from the roof into. The valley flashing laid over the joint where the two roofs meet should overlap the step flashing at least 2 in. Ground zero for roof rot is often where roofs meet walls. 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.

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

Slide the right edge of the flashing under the highest roof pitch. Position the flashing between the two roof pitches. Open valleys have metal flashing to protect this critical area of the roof.