All,
Just fitted new washbasin in the bathroom. I have screwed in the waste
fitting and connected up the waste pipes. All looks ok, until I turn the
tap on.... it appears as though as soon as the over-flow chamber gets
full (as the chrome plug /basin seal is obviously not water tight and
water leaks into the overflow chamber surrounding the plug hole fitting
even at low flow) the seal where the waste screws starts to leak. It
appears as though the large rubber washer between the waste screw and
nut isn't doing its job. HELP !!
I have tried all variations on tightness of this screw fitting but with
no luck. Any tips ?? What am I doing wrong ?!

Neil Catley wrote:
> All,
> Just fitted new washbasin in the bathroom. I have screwed in the waste
> fitting and connected up the waste pipes. All looks ok, until I turn the
> tap on.... it appears as though as soon as the over-flow chamber gets
> full (as the chrome plug /basin seal is obviously not water tight and
> water leaks into the overflow chamber surrounding the plug hole fitting
> even at low flow) the seal where the waste screws starts to leak. It
> appears as though the large rubber washer between the waste screw and
> nut isn't doing its job. HELP !!
> I have tried all variations on tightness of this screw fitting but with
> no luck. Any tips ?? What am I doing wrong ?!
>
Try using silicone (Fernox LS-X is good) or maybe plumbers mait.
Some suggest ditching the washer entirely and just silicone it, I
usually leave the washer and silicone both sides of it myself though,
seems to work well enough.
Remember to give the silicone time to set before putting water down the
waste

Lee

--
To reply use lee.blaver and ntlworld.com

"Neil Catley" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> All,
> Just fitted new washbasin in the bathroom. I have screwed in the waste
> fitting and connected up the waste pipes. All looks ok, until I turn the
> tap on.... it appears as though as soon as the over-flow chamber gets
> full (as the chrome plug /basin seal is obviously not water tight and
> water leaks into the overflow chamber surrounding the plug hole fitting
> even at low flow) the seal where the waste screws starts to leak. It
> appears as though the large rubber washer between the waste screw and
> nut isn't doing its job. HELP !!
> I have tried all variations on tightness of this screw fitting but with
> no luck. Any tips ?? What am I doing wrong ?!
>

Lift the whole waste outlet back out of the sink and smear some sealant
around the underside of the grating section. Lay it back in the hole but
don't squeeze it down.

Take the rubber washer and look at both sides of it. One side should have
ribs running around it and the other side should be smooth.

Smear some sealant around the ribbed side and place it over the tail of the
grating with the sealant on the upper side toward the basin.

Put the nut on the tail and, holding the grating gently with one hand, start
to tighten the nut on to the tail.

When the washer touches the basin, press down gently on the grating and then
line it up with the centre of the hole before tightening the whole thing up.

Don't use any wrenches on the fitting at all, as these waste outlets are
best just taken to hand tightness and no more. Then leave the whole lot for
a couple of hours, until the surface of the sealant has skinned over, before
running water through it.

BigWallop wrote:

> "Neil Catley" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...
> > All,
> > Just fitted new washbasin in the bathroom. I have screwed in the waste
> > fitting and connected up the waste pipes. All looks ok, until I turn the
> > tap on.... it appears as though as soon as the over-flow chamber gets
> > full (as the chrome plug /basin seal is obviously not water tight and
> > water leaks into the overflow chamber surrounding the plug hole fitting
> > even at low flow) the seal where the waste screws starts to leak. It
> > appears as though the large rubber washer between the waste screw and
> > nut isn't doing its job. HELP !!
> > I have tried all variations on tightness of this screw fitting but with
> > no luck. Any tips ?? What am I doing wrong ?!
> >
>
> Lift the whole waste outlet back out of the sink and smear some sealant
> around the underside of the grating section. Lay it back in the hole but
> don't squeeze it down.
>
> Take the rubber washer and look at both sides of it. One side should have
> ribs running around it and the other side should be smooth.
>
> Smear some sealant around the ribbed side and place it over the tail of the
> grating with the sealant on the upper side toward the basin.
>
> Put the nut on the tail and, holding the grating gently with one hand, start
> to tighten the nut on to the tail.
>
> When the washer touches the basin, press down gently on the grating and then
> line it up with the centre of the hole before tightening the whole thing up.
>
> Don't use any wrenches on the fitting at all, as these waste outlets are
> best just taken to hand tightness and no more. Then leave the whole lot for
> a couple of hours, until the surface of the sealant has skinned over, before
> running water through it.

Thanks for the tips - I'll give it a shot tonight.

Isn't there a rubber washer that goes between the waste and the sink,
i.e.above the sink?

Rob Graham

robgraham wrote:

> Isn't there a rubber washer that goes between the waste and the sink,
> i.e.above the sink?
>
> Rob Graham

nope. and its not on the diagram so I haven't just lost it ! If you think
about it, you dont need one as the chamber around waste beneath the grill
is designed to fill with water when the sink overflow has to kick in.

"Neil Catley" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> robgraham wrote:
>
> > Isn't there a rubber washer that goes between the waste and the sink,
> > i.e.above the sink?
> >
> > Rob Graham
>
> nope. and its not on the diagram so I haven't just lost it ! If you think
> about it, you dont need one as the chamber around waste beneath the grill
> is designed to fill with water when the sink overflow has to kick in.
>
>

I don't accept that!

If the flange of the waste fitting doesn't seal to the basin, what stops the
water running out - by seeping round the flange into the chamber you
mention - when the plug is in?

Roger

Roger Mills wrote:

> "Neil Catley" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed)...
> > robgraham wrote:
> >
> > > Isn't there a rubber washer that goes between the waste and the sink,
> > > i.e.above the sink?
> > >
> > > Rob Graham
> >
> > nope. and its not on the diagram so I haven't just lost it ! If you think
> > about it, you dont need one as the chamber around waste beneath the grill
> > is designed to fill with water when the sink overflow has to kick in.
> >
> >
>
> I don't accept that!
>
> If the flange of the waste fitting doesn't seal to the basin, what stops the
> water running out - by seeping round the flange into the chamber you
> mention - when the plug is in?
>
> Roger

I dont know - but there isnt one !

On Thu, 06 Nov 2003 18:07:39 +0000, Neil Catley <(E-Mail Removed)> wrote:

>Roger Mills wrote:
>
>> "Neil Catley" <(E-Mail Removed)> wrote in message
>> news:(E-Mail Removed)...
>> > robgraham wrote:
>> >
>> > > Isn't there a rubber washer that goes between the waste and the sink,
>> > > i.e.above the sink?
>> > >
>> > > Rob Graham
>> >
>> > nope. and its not on the diagram so I haven't just lost it ! If you think
>> > about it, you dont need one as the chamber around waste beneath the grill
>> > is designed to fill with water when the sink overflow has to kick in.
>> >
>> >
>>
>> I don't accept that!
>>
>> If the flange of the waste fitting doesn't seal to the basin, what stops the
>> water running out - by seeping round the flange into the chamber you
>> mention - when the plug is in?
>>
>> Roger
>
>I dont know - but there isnt one !
>

Had the same problem myself.

Did the smear of silicone under the waste itself and then reassembled
all the bits with ptfe tape on every thread whether it looked to need
it or not and not leaked since. :-)

Mark S.

> I dont know - but there isnt one !
>
Well, the lack of provision of one doesn't stop the laws of physics. I can't
see what's to stop water seeping around the waste if there is no seal above
the sink and under the waste flange.

Rob