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Is there ANYthing that will remove black mould from silicone sealant?

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MM

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Dec 22, 2008, 10:22:41 AM12/22/08
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The silicone sealant (from a gun) behind the kitchen sink (sealing the
worksurface to the wall tiles) has several spots of mould where I have
been a bit lax with the cleaning. Anything I've tried will not shift
the mould stains. The mould seems to have ingressed into the sealant.
Is there any modern product I could try? Or is this a case of redoing
the sealant strip in due course? I looked in Tesco, but they had no
mould remover of any kind.

MM

Andrew

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Dec 22, 2008, 11:40:49 AM12/22/08
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Lakeland had some mould remover for silicone but looking at the
'ingredients' list it seemed to be mainly bleach. So I tried bleach on
the black mould on the white silicone around the bath and it worked a
treat. Might be worth a try in the kitchen.

Andrew

Bob Mannix

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Dec 22, 2008, 11:41:57 AM12/22/08
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"Andrew" <andrew...@hotmail.com> wrote in message
news:d5f285ad-315e-4519...@g39g2000pri.googlegroups.com...

Bleach and/or replace, I'm afraid :o(


--
Bob Mannix
(anti-spam is as easy as 1-2-3 - not


news

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Dec 22, 2008, 11:48:31 AM12/22/08
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In message <qtbvk4h2eeh5frqmi...@4ax.com>, MM
<kyli...@yahoo.co.uk> writes

Dettol anti bacterial mould and mildew remover spray, bought from Tescos
here - and doubtless other supermarkets if not in your Tescos, works
just fine here most of the time. You have to leave it on the black
patch to work over a few hours.

Val
--
Val Davies

Rob

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Dec 22, 2008, 1:14:55 PM12/22/08
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You could try putting some cling film over bleach soaked tissue pressed
into the sealant, and leaving it an hour or so. Or Vim and a scourer.

Good ventilation should help prevent it happening.

Rob

Lobster

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Dec 22, 2008, 1:16:45 PM12/22/08
to
news wrote:
> In message <qtbvk4h2eeh5frqmi...@4ax.com>, MM
> <kyli...@yahoo.co.uk> writes
>> The silicone sealant (from a gun) behind the kitchen sink (sealing the
>> worksurface to the wall tiles) has several spots of mould where I have
>> been a bit lax with the cleaning. Anything I've tried will not shift
>> the mould stains. The mould seems to have ingressed into the sealant.
>> Is there any modern product I could try? Or is this a case of redoing
>> the sealant strip in due course? I looked in Tesco, but they had no
>> mould remover of any kind.

> Dettol anti bacterial mould and mildew remover spray, bought from Tescos

> here - and doubtless other supermarkets if not in your Tescos, works
> just fine here most of the time. You have to leave it on the black
> patch to work over a few hours.

Yeah I find that works better than bleach - not sure why as I can't
think what other ingredients it contains. Still not foolproof though:
if it's very bad replacement may be the only option.

David

The Medway Handyman

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Dec 22, 2008, 1:30:23 PM12/22/08
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Yup, much better than bleach - I don't know why either. Its described as
'activated' bleach whatever that means. It smells more strongly of chlorine
than normal bleach.

It also; "Contains an antimicrobial agent that removes stains caused by
ingrained mould" according to http://www.dettol.co.uk/sf_bathrooms.shtml#mmr

--
Dave - The Medway Handyman
www.medwayhandyman.co.uk

Bruce

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Dec 22, 2008, 4:14:44 PM12/22/08
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"The Medway Handyman" <davi...@nospamblueyonder.co.uk> wrote:
>
>Yup, much better than bleach - I don't know why either. Its described as
>'activated' bleach whatever that means. It smells more strongly of chlorine
>than normal bleach.
>
>It also; "Contains an antimicrobial agent that removes stains caused by
>ingrained mould" according to http://www.dettol.co.uk/sf_bathrooms.shtml#mmr


One of the best agents against mould is boric acid. It is extremely
effective when used in combination with sodium hypochlorite bleach.

I had to treat and remove some black mould at a house in the Caribbean
for friends who own it. I used boric acid and sodium hypochlorite
applied separately a day apart. 18 months later, it hasn't returned,
yet the mould had previously been a difficult problem for a number of
years.

I had no prior expertise and obtained the information about boric acid
and sodium hypochlorite bleach from Google searches.


Steve Firth

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Dec 22, 2008, 5:36:49 PM12/22/08
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MM <kyli...@yahoo.co.uk> wrote:

The only thing that will work is replacing the sealant. The mould is
often partly within the body of the sealant so no amount of chemical
warfare will get rid of it. The problem seems to be worse with silicone
sealants that produce acetic acid as they cure. Several species of
moulds can use this acetate as a food source, and the mould can
penetrate the sealant where it is cosy, well fed and happy.

Neutral cure silicone with a fungicide doesn't suffer in the same way.

Most of the commercial mould cleaning agents are based on sodium
hydroxide and bleach (sodium hypochlorite) with a little detergent "in
variable proportions". In general if you don't know much about chemistry
I can't recommend experimenting since the mixture causes terrible eye
damage if you manage to spray it into your eyes.

John

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Dec 22, 2008, 6:14:14 PM12/22/08
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"Rob" <patchoulia...@gmail.com> wrote in message
news:zOQ3l.69619$he4....@newsfe22.ams2...

Vim and a scourer will rough up the surface and make mould get a better hold
in the future. Domestos will work. (not poncey supermarket imitations
though)


Frank Erskine

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Dec 22, 2008, 7:54:14 PM12/22/08
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On Mon, 22 Dec 2008 23:14:14 -0000, "John" <Who90...@ntlworld.com>
wrote:

>Vim and a scourer will rough up the surface and make mould get a better hold
>in the future. Domestos will work. (not poncey supermarket imitations
>though)
>

Boodly 'ell - I haven't seen Vim for decades - can you still buy it?
ISTR there was also Oxydol, a very similar product. I think the CWS
used to do another called Pulvo.
Cillit Bang (what a stupid name!) and Mister Muscle (another stupid
nomenclature) seem to dominate the horriblemarket market, apart from
things like 'specialist' stainless steel stuff and Bartsteward's
Friend or whatever it's called.

--
Frank Erskine

Message has been deleted

Frank Erskine

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Dec 22, 2008, 8:55:14 PM12/22/08
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On Tue, 23 Dec 2008 01:16:59 GMT, <m...@privacy.net> wrote:

>On 23 Dec,

> Frank Erskine <frank....@btinternet.com> wrote:
>
>> Boodly 'ell - I haven't seen Vim for decades - can you still buy it?
>> ISTR there was also Oxydol
>

>Oxydol was a washing powder for whites. I think you mean Ajax.

Probably. I'm sure you're rite...


--
Frank Erskine

Derek Geldard

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Dec 27, 2008, 8:45:15 AM12/27/08
to

Or "Mirro"

WRT the black mould I'm fairly sure that what you see is just the
fruiting body and by the time it appears it's gone right through the
silicone, and if you clean it off it just comes back PDQ.

Derek

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