I vividly remember the job where I learned that even properly
installed siding isn't waterproof. It was a large, expensive
gambrel on the peak of the highest hill in town. Start to
finish, the job was a plum. The clients were overjoyed with
my work and moved in ahead of schedule. But six months
later, a wind-driven rain converted my plum into a prune. In
a late-night phone call, the owner explained in detail how
many drips-per-minute were falling from the head jamb of the
east-facing double-mullion window.
I "fixed" the leak the next day, but it reoccurred once a
year for three consecutive years. Each time there was a