Lower Roof Flashing Detail

Flashing joints are lapped 6 in the direction of water flow.

Lower roof flashing detail.

The pitch of the roof provides the gravity and the detailing provides the redirection. Above a lower roof where it abuts the wall in all cases make sure to detail the flashing membrane so that it sheds water. The metal flashing is formed with a hook edge and cleated on 12 centers. At the bottom of the roof water needs to be directed.

Before installing the flashing bring the shingles up to the vent pipe. Apply a coping over the wall flashing and fasten with self tapping screws every 24 inches on center. The lower edge is hemmed and laps the base flashing and is formed to be a snug fit against the base flashing. If installed along the foundation the membrane should cover the joint where the sill meets the foundation.

The flashing extends onto the roof a minimum of 2 inches 4 inches is preferable in more severe climate areas. It should tuck under the sheathing wrap above and over the flashing below. The cap flashing is set in the mortar joint between bricks. Then cut a hole in the shingle that will.

Fasten the wall flashing at the top of the wall every 6 inches on center. The flashing extends up the wall at least 4. Rain should run off the roof and into the gutter. Roof up to lower end of valley step flashing end shingles fitted and flashed against dormer under eaves practically all homes have circular vent pipes or ventilators projecting through the roof.

Apply the wall flashing over the roof flashing and termination bar. Ct 07 concrete or masonry wall base flashing with a 5 course flashing system. 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. Both the wall flashing and roof flashing should be fully adhered to the wall substrate.

Step flashing protects the gap where roofs meet walls by weaving into the roof shingles. Roofing cad details and other resources. A comprehensive roofing specification writing tool allowing users to quickly write accurate steep and low slope roofing specifications for job submittal packages. However in low slope roofing systems it is easier for water to accumulate.

Flashing is installed to surround roof features such as vents chimneys and skylights.