Pipes creaking when they heat

[russella]

Hi all,

Anyone have an easy solution to this one? I've run a piece of copper pipe through a hole I've drilled in the joist - the pipe was 15mm, the hole was 22mm, but even so there's still a creaking noise as the pipe heats up.

Is there anything I can inject around the pipe that will stop this happening? I know I heard felt mentioned once, but it's a bit of a tight fit for that.

Thanks,

Russ

 

[corgiman]

have you tried sleeving it in insulation through the hole?

 

[russella]

Can I get insulation that thin? We're talking a few mm clearance if that!

I was actually wondering whether another option might be to inject some kind of grease or silicon-type substance?

Russ

 

[JPC]

try the pipe covers you get from b and q...the type you use to Chrome" or Whiteen the pipoework to the rads

 

[corgiman]

Can I get insulation that thin? We're talking a few mm clearance if that!

I was actually wondering whether another option might be to inject some kind of grease or silicon-type substance?

Russ

get some hessian wrap



if if you have a 15mm pipe in a 22mm hole you should have 7mm all the way round

are you sure you hole is big enough?

 

[kirkgas]

the hole will be big enough but the pipe is probably sitting on the bottom of the hole, i would have suggested 19mm pvc overflow pipe, but TBH the rad snap is probably going to be easier to fit as it is designed to snap round the pipe and is slightly smaller, (was going to say i will remember that one for the next time, then i realised i am really clever and sleeve the pipes before i fit them )

 

[tamz]

if you have a 15mm pipe in a 22mm hole you should have 7mm all the way round

Not if it is drilled squint?

 

[kirkgas]

if you have a 15mm pipe in a 22mm hole you should have 7mm all the way round

Not if it is drilled squint?

do you not need a hole wider than 29mm to have 7mm all round a 15mm pipe, as the bore of the pipe is 15mm

 

[tamz]

Aye but i knew what he meant.

 

[corgiman]

Aye but i knew what he meant.

glad someone did

 

[gas4you]

I always use tubular hair felt where pipes contact joists etc.