Kitchen tap problem

[SandLake]

On my kitchen mixer tap, if I turn off the hot tap too quickly I can hear a slight drumming noise and the tap will start to drip, it even happens sometimes now if the dishwasher finishes, the same hot water tap drips and there is a faint drumming sound in the background.

What is the problem and how do I fix it? Just like to know before I get a plumber in.

 

[Rodreguez]

could be water hammer, u got unvented or combi?

 

[Bernie2]

If its just started, easiest is look for worn tap washer.

 

[WaterTight]

If it's just from one tap, it's probably the washer. Would also explain dripping. If you've got a flat headed and cross-headed screwdriver, some grips/adjustables and easy means of isolating the supply you might as well have a crack yourself. Go to youtube or something and watch some videos on changing washers.

 

[john.bell55]

The valve seat should also be ground

 

[SandLake]

It has been happening for a while now, but has got a bit worse lately. There is a downstairs loo close by and if the hot tap there is switched off sometimes this kitchen tap starts to drip. There is an isolating valve under the kitchen sink so I might just have a look at the washer to see if it is worn or marked. The hot water system is run from a vented oil boiler.

Thanks for the replies