When to use plumbers mait/silicone sealant

Discussion in 'Misc DIY' started by AndyP, Oct 18, 2004.

  1. AndyP

    AndyP Guest

    Probably a simple question but:

    When should I be using plumbers mait and when should I use silicone sealant?

    Obviously I use silicone for things like round edge of the bath etc.
    However, on my new bath, the instructions said to use silicone around the
    rim of the waste to seal it to the bath.. I thought I was supposed to use
    plumbers mait. The sealant I got from Wickes (their kitchen and bathroom
    stuff, which says it's suitable for baths, showers, etc) says it's not
    suitable for continual immersion in water, which seems to suggest I
    shouldn't use it for the bath. The bloke in Wickes recommended I use their
    "external leak sealer and jointing compound" round the waste.. I'm a bit
    confused by all this.

    As per another post, I'm also about to put a new tank connector into my cw
    cistern in the loft. If I want to be really paranoid, would putting some
    plumbers mait in there make it less likely to leak, or would it be
    pointless?

    Thanks,
    Andy
     
    AndyP, Oct 18, 2004
    #1
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  2. AndyP

    tarquin Guest

    On Mon, 18 Oct 2004 12:59:08 +0000 (UTC), "AndyP"
    <> wrote:


    >As per another post, I'm also about to put a new tank connector into my cw
    >cistern in the loft. If I want to be really paranoid, would putting some
    >plumbers mait in there make it less likely to leak, or would it be
    >pointless?
    >

    it would probably be counter-productive IMHO,just use the washers as
    supplied with the tank connector fitting.

    joe
    >Thanks,
    >Andy
    >
     
    tarquin, Oct 18, 2004
    #2
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  3. AndyP

    Lee Guest

    AndyP wrote:
    > Probably a simple question but:
    >
    > When should I be using plumbers mait and when should I use silicone sealant?
    >


    Use Fernox LS-X it's great for these applications.

    Lee
    --
    Email address is valid, but is unlikely to be read.
     
    Lee, Oct 18, 2004
    #3
  4. AndyP

    AndyP Guest

    "tarquin" <> wrote in message
    news:...
    > On Mon, 18 Oct 2004 12:59:08 +0000 (UTC), "AndyP"
    > <> wrote:
    >
    >
    > >As per another post, I'm also about to put a new tank connector into my

    cw
    > >cistern in the loft. If I want to be really paranoid, would putting some
    > >plumbers mait in there make it less likely to leak, or would it be
    > >pointless?
    > >

    > it would probably be counter-productive IMHO,just use the washers as
    > supplied with the tank connector fitting.
    >


    Sadly no washers were supplied (tank connector bought from Wickes - they
    sell many different types of washer separately, although it's not obvious
    which sort I should use).

    Cheers,
    Andy
     
    AndyP, Oct 18, 2004
    #4
  5. AndyP

    Al Reynolds Guest

    "AndyP" <> wrote:
    > Probably a simple question but:
    >
    > When should I be using plumbers mait


    Almost never.

    > and when should I use silicone sealant?


    Most of the time.

    > [snip]
    > As per another post, I'm also about to put a new tank connector into my cw
    > cistern in the loft. If I want to be really paranoid, would putting some
    > plumbers mait in there make it less likely to leak, or would it be
    > pointless?


    Whenever I've used plumber's mait in any joint, i've ended
    up taking it out, cleaning it all off, and using silicone or the
    correct washer. I reckon you'd be best to start with silicone
    or the correct washer.

    AFAICR, Belfast sink wastes need plumber's mait, but
    I don't have one so I'm not sure about that.

    HTH,
    Al
     
    Al Reynolds, Oct 18, 2004
    #5
  6. AndyP

    AndyP Guest

    "Al Reynolds" <> wrote in message
    news:cl0kiq$smq$...
    > "AndyP" <> wrote:
    > > Probably a simple question but:
    > >
    > > When should I be using plumbers mait

    >
    > Almost never.
    >
    > > and when should I use silicone sealant?

    >
    > Most of the time.
    >


    So is there a brand of silicone suitable for total immersion in water - eg
    round bath waste? As I mentioned, the stuff I've got (from Wickes) says it's
    not suitable for this.

    Thanks,
    Andy

    > > [snip]
    > > As per another post, I'm also about to put a new tank connector into my

    cw
    > > cistern in the loft. If I want to be really paranoid, would putting some
    > > plumbers mait in there make it less likely to leak, or would it be
    > > pointless?

    >
    > Whenever I've used plumber's mait in any joint, i've ended
    > up taking it out, cleaning it all off, and using silicone or the
    > correct washer. I reckon you'd be best to start with silicone
    > or the correct washer.
    >
    > AFAICR, Belfast sink wastes need plumber's mait, but
    > I don't have one so I'm not sure about that.
    >
    > HTH,
    > Al
    >
    >
     
    AndyP, Oct 18, 2004
    #6
  7. AndyP

    Grunff Guest

    AndyP wrote:

    > So is there a brand of silicone suitable for total immersion in water - eg
    > round bath waste? As I mentioned, the stuff I've got (from Wickes) says it's
    > not suitable for this.



    Then it's not silicone. Silicone is always suitable for immersion in water.

    --
    Grunff
     
    Grunff, Oct 18, 2004
    #7
  8. AndyP

    Ed Sirett Guest

    On Mon, 18 Oct 2004 12:59:08 +0000, AndyP wrote:

    > Probably a simple question but:
    >
    > When should I be using plumbers mait and when should I use silicone sealant?
    >
    > Obviously I use silicone for things like round edge of the bath etc.
    > However, on my new bath, the instructions said to use silicone around the
    > rim of the waste to seal it to the bath.. I thought I was supposed to use
    > plumbers mait. The sealant I got from Wickes (their kitchen and bathroom
    > stuff, which says it's suitable for baths, showers, etc) says it's not
    > suitable for continual immersion in water, which seems to suggest I
    > shouldn't use it for the bath. The bloke in Wickes recommended I use their
    > "external leak sealer and jointing compound" round the waste.. I'm a bit
    > confused by all this.
    >
    > As per another post, I'm also about to put a new tank connector into my cw
    > cistern in the loft. If I want to be really paranoid, would putting some
    > plumbers mait in there make it less likely to leak, or would it be
    > pointless?


    There are very few places where Mait (stay soft putty) is needed. Basin
    wastes is one. Useful also when ceramic is on ceramic to soften the
    contact, i.e. basin on pedestal, or WC pan on floor tiles.

    --
    Ed Sirett - Property maintainer and registered gas fitter.
    The FAQ for uk.diy is at www.diyfaq.org.uk
    Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html
    Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html
     
    Ed Sirett, Oct 18, 2004
    #8
  9. AndyP

    Al Reynolds Guest

    "AndyP" <> wrote in message
    news:cl0p8i$eks$...
    >
    > "Al Reynolds" <> wrote in message
    > news:cl0kiq$smq$...
    >> "AndyP" <> wrote:
    >> > Probably a simple question but:
    >> >
    >> > When should I be using plumbers mait

    >>
    >> Almost never.
    >>
    >> > and when should I use silicone sealant?

    >>
    >> Most of the time.
    >>

    >
    > So is there a brand of silicone suitable for total immersion in water - eg
    > round bath waste? As I mentioned, the stuff I've got (from Wickes) says
    > it's
    > not suitable for this.


    I always use Unibond Sanitary Sealant.
    Never had any problems on wastes etc.

    Al
     
    Al Reynolds, Oct 18, 2004
    #9
  10. AndyP

    Pete C Guest

    On Mon, 18 Oct 2004 15:59:14 +0000 (UTC), "AndyP"
    <> wrote:

    >So is there a brand of silicone suitable for total immersion in water - eg
    >round bath waste? As I mentioned, the stuff I've got (from Wickes) says it's
    >not suitable for this.


    Hi,

    If it's cheap stuff maybe it has fillers in. Silicone has long been
    used for holding glass fish tanks together so the proper stuff can be
    used in that way.

    cheers,
    Pete.
     
    Pete C, Oct 18, 2004
    #10
  11. AndyP wrote:

    > Probably a simple question but:
    >
    > When should I be using plumbers mait and when should I use silicone sealant?
    >


    Silicone sealant is not appropiate for surfaces which need to slide over
    one another to seal - e.g. threads.

    In every other way, its better than sliced bread, except for toast.
     
    The Natural Philosopher, Oct 19, 2004
    #11
  12. In article <cl0p8i$eks$>,
    AndyP <> wrote:
    > So is there a brand of silicone suitable for total immersion in water -
    > eg round bath waste? As I mentioned, the stuff I've got (from Wickes)
    > says it's not suitable for this.


    Fernox LS-X as already mentioned.

    --
    *Why is the man who invests all your money called a broker?

    Dave Plowman London SW
    To e-mail, change noise into sound.
     
    Dave Plowman (News), Oct 19, 2004
    #12
  13. AndyP

    Steve Firth Guest

    AndyP <> wrote:

    > So is there a brand of silicone suitable for total immersion in water - eg
    > round bath waste? As I mentioned, the stuff I've got (from Wickes) says it's
    > not suitable for this.


    Not silicone, but Evostick Nail and Seal is suitable for prolonged
    immersion. It's much better than silicone, even the Fernox LS stuff
    which is just the usual piss-poor silicon in a small tube.

    --
    Quanto e quel cane nella vetrina (arf, arf)
    Quello con coda scuotente
    Quanto e quel cane nella vetrina (arf, arf)
    Spero che il cane sia vendita
     
    Steve Firth, Oct 19, 2004
    #13
  14. AndyP

    AndyP Guest

    "Grunff" <> wrote in message
    news:...
    > AndyP wrote:
    >
    > > So is there a brand of silicone suitable for total immersion in water -

    eg
    > > round bath waste? As I mentioned, the stuff I've got (from Wickes) says

    it's
    > > not suitable for this.

    >
    >
    > Then it's not silicone. Silicone is always suitable for immersion in

    water.
    >
    > --
    > Grunff


    Hmm. Well it definately says it's silicone on the tube. And it definately
    says it's not suitable for continual immersion in water. Sounds like there
    are different "grades" of the stuff with the Wickes variety being down the
    bottom end.

    Cheers,
    Andy
     
    AndyP, Oct 19, 2004
    #14
  15. AndyP

    Pete C Guest

    On Tue, 19 Oct 2004 07:06:30 +0100, Andy Wade
    <> wrote:

    >
    >... a disaster. AIUI you should _never_ use linseed oil based compounds
    >(such as plumbers' mait or boss white) on plastic fittings.
    >
    >(I'm assuming you mean a plastic cistern, not an old galvanized one.)


    Hi,

    Does the oil affect the plastic in any way?

    cheers,
    Pete.
     
    Pete C, Oct 19, 2004
    #15
  16. AndyP

    Rob Graham Guest

    Andy Wade <> wrote in message news:<417623df$0$27540$>...
    > Pete C wrote:
    >
    > > Does the oil affect the plastic in any way?

    >
    > I think it can do, with some types of plastic, possibly by a reaction
    > with any plasticiser, causing embrittlement. I first came across the
    > advice in the instructions that came with a Ferham plastic (PVC,
    > probably) cistern and have kept it in mind ever since.


    Ah well, in that case I'm going to have problems sometime in the
    future !! Firm believer in Plumber's Mait for traps and the likes.
    At least I might now have an idea what was the cause.

    As a side question - what is the best way of getting taps to tighten
    properly onto the bath or basin; previously you could rely on the
    stiffness of the copper pipe to help with this but with flexible
    couplings and plastic washers I'm finding it difficult to get taps to
    lock properly to the bath, etc.

    Rob
     
    Rob Graham, Oct 20, 2004
    #16
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