L flashing can be cut into smaller lengths to use as step flashing.
Sheet metal flashing details.
Ap1 standard apron detail ap2 transition detail cf1 two piece cut in counter flashing cf2 two piece counter flashing cf3 cut in counter flashing cf4 surface mounted counter flashing cf5 surface mounted integral counter flashing cp1 coping with standard cleat cp2 coping with raised cleat cp3 coping with integral counter flashing dr1 drip flashing.
As with any flashing detail the materials used should result in a uniform and compatible design.
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Base and counter flashing with reglet.
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This will keep weather out prevent lifting in high winds and provide a neat fin ished appearance.
For example joining two materials with significantly different coefficients of thermal expansion such as metal flashing and bitumen roofing membrane can cause tearing and failure of the joint.
Where flashings need to be site built from sheet metal or flashing membranes the finished installation must follow the fundamental flashing rules of down and out.
Flashing exposure with inside fascia.
Flashings must always direct water out over the cladding or drainage plane without openings that would allow water to be directed back into the wall.
Many critical metal elements are invisible flashing.
Many roofing membranes also shrink as they age.
At the gable edge use a gable or sidewall flashing.
Counter flashing with kick out.
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The trim and roofing sheet should be fastened every 12 to 24 inches along the gable edge.
L shaped flashing is a versatile general use flashing used where a uniform or strengthened finish is needed on a 90 surface.
To provide a drip edge allow an overhang of 1 to 2 inches at the eave.
