Tapping Pipes

by **matt666** » Tue Nov 13, 2007 11:52 am

Hi,

Question for the plumbers! When I have my central heating on, after about an hour the pipes in the bedroom start tapping. They will tap for 20 seconds then be quiet for a minute then tap again, coincides with the boiler firing. I have a combi boiler and the central heating system is relatively new, about 10 years old.

The tapping can be stopped by turning the radiator in the bedroom off, which worked for a while but doing that is causing damp in there, so if anyone has a solution it would be very much appreciated as it's driving me mad!

One more possibly relevant point, this all seemed to start after I had a new bathroom last year, which involved replacing the radiator for a towel rail. This was done by a professional plumber.

Any replies will be gratefully recieved!

Many Thanks
Matt

by **The Heating Doctor** » Tue Nov 13, 2007 9:19 pm

Has the plumber secured the pipework with pipe clips as it sounds like the pipes are moving when the boiler starts, which is when the pump will kick in.

by **matt666** » Wed Nov 14, 2007 11:56 am

Thanks for the reply. I'm not sure TBH. All the work he did was in the bathroom and consisted of taking out a radiator and moving one pipe slightly closer to the other to accomodate the towel rail. All the pipe work is under the floor upstairs under tiles in the bathroom and a laminate floor in the bedroom so it will be difficult to check the clips.

The tapping isn't coming from the bathroom, it comes from near the bedroom radiator, could a clip have come loose perhaps?

Would the only way to check be to rip the floor up?