Head Flashing over Water Table / Skirt Board w/Rainscreen
My project: Single-story, 1/2″ D rainscreen with 1″ D live-edge cedar siding (projects ~2″ at overlap) + 3″ D cedar skirt, in Zone 2A. 2 questions:
1) Rainscreen details usually show a rigid head flashing (aka drip cap) above the water table (aka skirt, aka trim at bottom of wall), going back to the battens (not the sheathing). Is this necessary if I instead rip the top edge of the skirt on a 10° bevel? I’ll leave a 3/8″ gap above the skirt / below the siding.
2) Do I need a drip kerf cut in the bottom edge of the skirt? It’s 30″ above the ground. Behind it is ~3″ of dead air space, then the web of a steel I-beam.
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