Pipe noise in walls
Posted by S. Underhill on February 14, 19100 at 00:28:28:
I've noticed lately that when I first start my dishwasher, there is a loud vibrating noise occuring in the wall behind the washing machine (which is in another room-they do not "share" a wall). It happens only during certain cycles of the dishwasher. (Hot water?) At the other end of the house, after I have run hot water from the bathroom sink, there is a light knocking noise in the wall there, but goes away after while. What on earth could this be?

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