Water hammering, no, jack hammering

LOL I won't. The thing is we never used it until about 5 years ago. That's when my kids got old enough to start taking showers. Of course the noise was so bad that they couldn't stay in there. They just started using the shower in the master bath instead and I never really thought anything else about it. I'll tell you one thing though. I'll know how to fix it if it happens in our new house.

Thanks again.

But "Muphy's Law" says it will be something different like whenever you turn on the valve... But you know where to find us!