Grayfeathers
Member
The house is 17 yrs old. We've had this problem since we've owned the house but we just don't use the tub/shower unit. The unit has a single knob and a pull to activate the shower. Running the hot water alone in the tub there is no hammering, only when the shower is activated. When the shower is activated, the noise is so loud you can't stand to be in the bathroom. This is a continuious hammering, almost as if you have a machine gun in the bathroom with you. This is the only room that we have this problem in. You can get to the gate valves to both the hot and cold in the basement directly below the unit but the lines are close to the joist and there is no room for any arestors or what ever you call them. I have drained the lines many times to no avail. We are tring to sell the house and have been asked to fix the problem via the home inspector. Any suggestions would be greatly appreciated.