Click click click

[Alwayslearning22]

I’ve this really annoying clicking noise 

after running hot water through my upstairs bathroom sink. Also happens when I run water through the bath. 
any advice  on finding the problem area and solving this really annoying noise  

[twice round the block]

uninsulated soil stack?

[Andehh]

Hot water making plastic pipes expand slightly and then contracting afterwards.... Potentially running against joists! Same as black guttering through the summer. Not sure there is a solution I'm afraid.

 

Only way to solve is lifting up flooring and insulating the pipes from anything they might be touching.

 

I remembering it very unfondly from my first house and the new central heating pipes every morning waking me up!!!!

 

One to learn to live with!

Edited January 3 by Andehh

[marshian]

If the house is 70’s or 80’s my money says It’ll be expansion and contraction on a HW pipe cut into a joist and pinned with a nail folded round it. 

[joe90]

Yes sounds like plastic expanding ( Like guttering tends to do) 

[SteamyTea]

We have some shipping containers that we use for storage.

Popped outside with a mug of tea for a quick break at about 7AM this morning.  It was very cold.

There was a very loud bang.  I can only assume it was some thermal expansion/contraction from the shipping container.

Being a brave and reckless idiot, I went to investigate.

Then realised it might be an intruder and I was alone on site.

So went back inside the main building and locked the door.