noisy pipes

[markie333]

hi

every time i turn on a tap ...hot or cold and downstairs or upstairs....i get this noise. it sounds like someone drilling into brickwork. its lasts for up to 30 secs then dies away and it seems to be coming from the attic...tho im not too sure if its in the bathroom too. anyone any ideas on how to cure it before calling out a plumber? thx in advance

 

[gasafengineer]

Go check on yer ballvalve..................turn main supply off when opening taps & 'hammer sound' will disappear.

 

[Whitespirit66]

Probably a worn ball valve in your cold water storage tank. Replace the valve.

 

[dreadnoughtheating]

Ball valve in domestic tank is worn internally. I would suggest from your suggestion that you have 'low-pressure' fed cold taps(except perhaps the kitchen sink one?)/WC Cistern

It would likely need replacement, as just re-washering it only means another part will be worn as well. (thats my experience anyway, and I've done a few over the decades.....)

Get a registered plumber in to carry this out if you have any doubts about your own abilities while crawling about in thght enclosed spaces/fear of spiders/vermin etc.

DH