I'm helping maintain a set of townhome units and the homeowners are reporting an annoying drip sound just outside their bedroom when it lightly rains (which is quite often). Apparently the sound is loud enough and at just the right frequency that it is quite audible with the windows closed.
I managed to recreate the problem with a hose and found that when water trickles down the rooftop patio railing, it drips onto a flashing that rests flat on top of a brick finish (see picture below).
What is the ideal way to fix this? And what is a quick fix we could do to fix this in the short-term?