A minute or so after the toilet tank refills after flushing a vibration sound occurs within the walls but only lasts a few seconds. This happens every time but only with the downstairs toilet. What\\\'s going on?
Possible high water pressure hammering which you could turn the main stopcock down to see if it make any difference,or could be your ballcock in your toilet or cold water storage tank need cleaning or replacing.The only other thing you can check out is make sure all the pipes is secure and not loose.
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