I have a shower stall that has the shower head coming out of the ceiling. After every shower I can hear a "draining" type noise that appears to be coming from the wall/ceiling area. Any input would be helpful... Thanks in advance!

How long does this sound last? When you hear this sound is any water coming out of the shower head?

Maybe a minute or two... and it appears to be just a trickle.

The noise is just the water in the vertical and horizontal pieces of pipe draining out. Just like pouring water water out of a bottle, air must get into the pipe before the water can drain out. Nothing to worry about.

Can I add an air chamber 1) over the shower head or 2) over the divirter to stop the noise?

Can anyone think of a way to make this drain faster w/out the noise?