Why would you need to airiate the water in a wash basin, its not exactly a
hot tub is it?

Brian

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"Chris Hogg" wrote in message
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On Wed, 18 Sep 2019 15:43:47 GMT, John
wrote:

Just had new washbasin with pop up waste and a new central mixer tap with
aeriator that is directly above it.

I am noticing that often with the tap running it seems to not drain
properly and the sink starts to fill. I am begining to think that the
bubbles in the water interfere with the ability of the drain to take the
water!

Any thoughts?

Remove the aerator temporarily and see if the problem persists. (I
think they either screw in or are just a push fit. IME they're not
difficult to remove https://tinyurl.com/y6l795mv ). If it does
persist, the problem is further down the waste pipe. Is the pop-up
popping up far enough? They can be adjusted. Or is there some
obstruction, like a lump of mastic or whatever as a result of the
installation, sitting on the lifting mechanism down there and getting
in the way.

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Chris