The flashing extends onto the roof a minimum of 2 inches 4 inches is preferable in more severe climate areas.
Roof and wall flashing.
The shorter vertical plane is attached to the upper floor wall under the building paper the lower plane sits on top of the underlayment and under the shingles.
Roof to wall flashing is bent at a 110.
Except where walls are brick the vertical part of the sidewall flashing should extend up behind the exterior wall covering just like with headwalls.
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.
L shaped flashing is a versatile general use flashing used where a uniform or strengthened finish is needed on a 90 surface.
Galvanized steel is a trusted low maintenance product that is known for durability.
The metal flashing is formed with a hook edge and cleated on 12 centers.
If the lower roof abutting the building sidewall is being installed before the building s final wall siding and water membrane are being installed the building membrane roofing felt on the wall or final building siding may be able to serve as counter flashing atop the step flashing.
Flashing joints are lapped 6 in the direction of water flow.
Flashing is installed to surround roof features such as vents chimneys and skylights.
A sidewall is a junction between a wall and a sloped portion of a roof.
