Flashing Where Two Roof Lines Meet

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.

Flashing where two roof lines meet.

Flashing is installed to surround roof features such as vents chimneys and skylights. Position the flashing between the two roof pitches. Now nail this first flashing at both its far ends. Step 6 install the flashing.

Place the 2 by 4 inch piece of lumber along the center of the flashing. Roof flashing is a thin material usually galvanized steel that professional roofers use to direct water away from critical areas of the roof wherever the roof plane meets a vertical surface like a wall or a dormer. Rain should run off the roof and into the gutter. Step flashing protects the gap where roofs meet walls by weaving into the roof shingles.

Remember to caulk the underside of the flashing with a sealant. Types of roof flashing. Valley flashing protects the valleys where two roof planes meet. A common problem area is the point where a gutter dies into an adjoining wall as the photo below illustrates.

Step flashing protects the joints between the roof deck and chimneys or dormers. 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. The metal flashing is formed with a hook edge and cleated on 12 centers the flashing extends up the wall at least 4 the flashing extends onto the roof a minimum of 2 inches 4 inches is preferable in more severe climate areas. Flashing joints are lapped 6 in the direction of water flow.

At the bottom of the roof water needs to be directed.