Just completed my bathroom remodel. The shower squeals for a few minutes after turning on the water then the squeal goes away. The noise
sometimes starts right away but usually after it has been on a few minutes. It doesn't last long but can be loud and annoying. I removed
the shower head and flushed the water line. Thought it might be debris. Could not get the head apart to clean it so I reinstalled it. I checked
the water pressure and it reads 50 psi.