Tap squeak & hiss

[randers]

Hello.
My son's new house - when the downstairs toilet is flushed the kitchen tap makes a squeaky hissing sound! It has a slight drip he tells me which I'll look at, but does anyone have any idea what'll be making it make a noise? Thanks for any help - I do appreciate it.

 

[CBW]

Likely to be the kitchen tap if it’s dripping, especially if it’s a cartridge/insert type. Is the house new to him or a new build? If the latter, get them out for a defect.

 

[randers]

Thanks Chris. He did mention a drip so I'll replace the cartridge/insert.

 

[Harry Bloomfield]

Thanks Chris. He did mention a drip so I'll replace the cartridge/insert.

It could just be limescale build up preventing the cartridge from fully sealing - try soaking the cartridge in lemon juice for an hour or two, before seeking a replacement.

 

[randers]

Thanks Harry. I'll have a good look at that before buying!

 

[Madrab]

Typical worn 1/4 turn ceramic valve along with high water pressure. Best to replace both hot and cold.