Flashing roofs

Ask the pros- May, 2002
By Reggie Bullard


What do I do to put flashing on roof intersections and  chimneys for stucco?

kick out flashing
Kick out flashing is tucked behind the step flashing and attached to the wall
with a nail. The kick out is folded to divert water into the gutter. It may be
necessary to secure the kick out to the gutter with a screw. The kick out 
will be trimmed down to look neater later.
counter flashing
A counter flashing is bent with a metal brake. The counter flashing covers
the step flashing and the kick out flashing. The ledge on top where the stucco
stops is called a stucco stop by roofers. The metal lath and stucco will overlap
the flange on top. The stucco stop is 1" and the finish thickness of the stucco
is 3/4", leaving a 1/4" reveal. Note how the counter flashing sticks out slightly
past the edge of the  roof. The counter flashing keeps water from getting 
between the steps in the step flashing. This is important for heavy storms,
melting snow, etc.

flashing roof plaster stop (casing bead)
The counter flashings are overlapped with an extra piece of flashing behind it for good measure. The flange on the wall will be overlapped with tar paper, then metal lath and stucco. The key here is let logic dictate: overlap, overlap, overlap.
Of course, if more than one piece of
flashing is used, put the bottom piece on first and and let the top piece overlap. Tar paper is always started at the bottom of the wall, allowing the top pieces to overlap the bottom. 
A view of the flange on the counter flashing covered with tar paper, 3/4" casing bead, and self furring metal lath.

Again, overlap, overlap,overlap.

Logical, as Dr. Spock says.

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