wrote in message
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On some 100 year old brick farm houses the step flashing IS set into
the brick - no counter flashing used. - and NOT nailed to the roof in
that case. Martared into the brick joints and some real nasty angles.

BTW, the technical term for the cut in mortar joints is called a reglet.
And, in the old days those one piece were laid while the chimney was being
built. Just a bit of information, next time you feel like telling stories.