On Tue, 14 Feb 2006 21:18:38 -0000, "Rob Whitton"
wrote:

"David" wrote in message
...

When my CH comes on in the morning, the radiators make a tapping sound
as they heat up. There's one tap about every 10-15 seconds but slows
down and stops when they are hot. I assume its something to do with
expansion, but can this noise be stopped?


Regards

Dave


There should be some small plastic shims which isolate the radiator from the
brackets and stop most of the noise. Unfortunately these often aren't
fitted. In my house I found that using a straw and squirting some WD40
(oil/grease/graphite would probably be better but the chance of a messy
accident if you don't want to remove the radiator is considerably greater)
on the mating face between the radiator and bracket stopped most of the
noise - and to my surprise has had quite a long lasting effect. It isn't
uncommon for noise to be generated as pipes move against notched joists.
This then gets transmitted via the pipe work and it can be difficult to
determine the origin.

Rob




Thanks for the reply.


Dave