What kind of insulation to cover water pipes to reduce noise

[anit999]

I have a cold water pipe running up through a pillar in a wall in a downstairs office/bedroom. I want to reduce the noise when the water is being used.

What kind of sound insulation can I use to cover water pipes in a pillar to reduce the noise?

 

[Nige F]

probably none - you need to find/ eliminate the source

 

[TicklyT]

Most thermal insulation has pretty good accoustic insulation properties, but pipes need to be supported, so the noise will still be transmitted through the pipe fixing clips to the wall.

The better approach is as Nige F said, to identify and address the source of the noise.

Inadequate support for pipes can contribute greatly to noise transmission through your plumbing.

Simply replacing float valves that are nearing the end of their useful lives may reduce the noise, as can fully opening stopcocks some people leave half closed, mistakently thinking that reduces their water pressure. Half closing a valve limits the flow and dynamic residual pressure, but does nothing to the static pressure. Turbulent flow through a half closed valve not only causes noise, but can also damage valve seats and washer, so it won't work when you need it to.

 

[JohnD]

you can get Silent Valves for WC cisterns and cold water tanks.

They are fantastic

Make sure the pipe has no grit in it though, as they will drip if they get dirt in them.