What is the dripping sound coming from our new en suite?

John Conlin / 20 February 2018

Chartered surveyor John Conlin answers a reader question about a repetitive dripping sound coming from a brand new en suite.


We recently had an en suite built but there is a repetitive dripping sound every five or so seconds when the basin or shower is used. All the pipes are hidden. Is there any way of telling if the joints are leaking?


I doubt that the noise you are hearing is a dripping joint. More likely it is the slight movement of the plastic pipes against tight support clips because it expands as hot water drains and contracts after the hot flow has ceased.

Test this theory by running cold water and then hot water. If I’m right you will only hear the noise when the hot water is running.

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