washbasin waste seal leaking !

Discussion in 'UK DIY' started by Neil Catley, Nov 5, 2003.

  1. Neil Catley

    Neil Catley Guest

    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, Nov 5, 2003
    #1
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  2. Neil Catley

    Lee Blaver Guest

    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
    Lee Blaver, Nov 6, 2003
    #2
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  3. Neil Catley

    BigWallop Guest

    "Neil Catley" <> wrote in message
    news:...
    > 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, Nov 6, 2003
    #3
  4. Neil Catley

    Neil Catley Guest

    BigWallop wrote:

    > "Neil Catley" <> wrote in message
    > news:...
    > > 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.
    Neil Catley, Nov 6, 2003
    #4
  5. Neil Catley

    robgraham Guest

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

    Rob Graham
    robgraham, Nov 6, 2003
    #5
  6. Neil Catley

    Neil Catley Guest

    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, Nov 6, 2003
    #6
  7. Neil Catley

    Roger Mills Guest

    "Neil Catley" <> wrote in message
    news:...
    > 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, Nov 6, 2003
    #7
  8. Neil Catley

    Neil Catley Guest

    Roger Mills wrote:

    > "Neil Catley" <> wrote in message
    > news:...
    > > 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 !
    Neil Catley, Nov 6, 2003
    #8
  9. Neil Catley

    Mark S. Guest

    On Thu, 06 Nov 2003 18:07:39 +0000, Neil Catley <> wrote:

    >Roger Mills wrote:
    >
    >> "Neil Catley" <> wrote in message
    >> news:...
    >> > 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.
    Mark S., Nov 6, 2003
    #9
  10. Neil Catley

    robgraham Guest

    > 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
    robgraham, Nov 7, 2003
    #10
  11. In article <>,
    Neil Catley <> writes:
    > 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 ?!


    I just did the same, and had the same problem.
    The rubber washer was profiled and not symmetrical, but no hint
    which way round it went. I took it apart and turned it the other
    way up, and that fixed it.

    In article <>,
    Neil Catley <> writes:
    > 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.


    Mine came with a foam washer for this purpose, which squashes
    to just about nothing when you fit it. Without that, the sink
    would slowly empty when the plug was in.

    --
    Andrew Gabriel
    Andrew Gabriel, Nov 7, 2003
    #11
  12. Neil Catley

    Neil Catley Guest

    Andrew Gabriel wrote:

    > In article <>,
    > Neil Catley <> writes:
    > > 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 ?!

    >
    > I just did the same, and had the same problem.
    > The rubber washer was profiled and not symmetrical, but no hint
    > which way round it went. I took it apart and turned it the other
    > way up, and that fixed it.
    >
    > In article <>,
    > Neil Catley <> writes:
    > > 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.

    >
    > Mine came with a foam washer for this purpose, which squashes
    > to just about nothing when you fit it. Without that, the sink
    > would slowly empty when the plug was in.
    >
    > --
    > Andrew Gabriel


    Always the simple things eh ?! I'll try this first before getting the silicon
    gun out. Thanks for the tip.
    Neil Catley, Nov 7, 2003
    #12
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