Leak underneath bathroom sink

stuart45

If you've got Screwfix etc. nearby, you could pick up a basin waste seal kit for less than £5. It's a 3 piece kit that's easy to fit, and works really well.

stuart45

Baggypuss said:

retainer nut is split

Sorry, didn't see that bit.

WIAWSNB

Baggypuss said:

retainer nut is split

Almost certainly the cause of the problem.

Two solutions - a new black nut, or a 'fix'! Clearly the first option is best. 

Q - is the chrome waste that's visible inside the basin in good condition? Would you prefer to replace it all - new waste and nut? 

You can certainly bodge a repair to a nut like this by wrapping a 'jubilee' clip around it to keep it firm, but best to replace.

Baggypuss

Chrome waste you mean this ? Not sure in good condition 

stuart45

A complete new waste will be less than £10. All you need to do now is knock the old one up. It's probably siliconed in, so might need a bit of force. Clean up the basin faces, and get the new one in. Get the nut on hand tight, but then nip it up with a pair of pump pliers etc.

Baggypuss

I did reconnect black nut with washer and turned on tap. Water was coming  out from sides not middle.

B&Q is near. I am aware they can be pricey. I will look at whether to go for new chrome waste or just black nut or Basin mate. 

Many thanks for all the suggestions. 

I will update as to how it goes.

bjorn_toby_wilde

There are some decent videos on YouTube showing how to do it.

The one below shows fitting a “clicker” waste but the fitting process is the same.

Sometimes the waste itself has a slot cut in the threaded section for a separate overflow. The waste that you have doesn’t as far as I can see. Make sure you buy the correct one.

https://m.youtube.com/watch?v=2TafZend6Nk

WIAWSNB

Baggypuss said:

Chrome waste you mean this ? Not sure in good condition 

It looks perfectly fine, tho' a brand new one with look finerer. 

What type of plug does it have - pop-up? Or just chained?

And, is there an overflow hole in the basin side? 

Tbh, with all that sealant, the waste shouldn't leak even with a loose nut, as it should have 'set' in a manner that's watertight. So I'd suggest the sealant needs redoing in any case, even if you replace only the nut.

In any case, even if you track down a 'nut', it'll cost silly money like a £iver, whereas a complete new waste can be had for around a £enner. A quality one like Alpine only a few squid more. 

B&Q are actually quite reasonable. Or, do you have a Screwfix or Toolstation nearby? 

Before buying a new waste, I think it'll be worth removing the old one, so you can compare them for length and stuff. 

https://www.screwfix.com/c/heating-plumbing/wastes/cat831612?wastelocationtype=basin

What tools do you have? An adjustable wrench - 'waterpump pliers'? 

bjorn_toby_wilde

bjorn_toby_wilde said:

There are some decent videos on YouTube showing how to do it.

The one below shows fitting a “clicker” waste but the fitting process is the same.

Sometimes the waste itself has a slot cut in the threaded section for a separate overflow. The waste that you have doesn’t as far as I can see. Make sure you buy the correct one.

https://m.youtube.com/watch?v=2TafZend6Nk

Correction. Thinking about it, there will definitely be a slot for the overflow, which is part of the basin.  You’ll see it when you take the old waste out.

Sorry - senior moment 😁

stuart45

All the plumbers I know sling that foam washer away and use sealant. They also get the backnut tighter than hand tight.