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Total loss

Original Poster:

1,621 posts

113 months

[news] 
Saturday 28th April 2012 quote quote all
In our new (old) house, when you clean up under the toilet bowl rim some black mould?/gunk comes out. It is not in the cistern above and there is always more the next time it is cleaned. Anybody got a clue as to what it is aand how to get rid ? I've never had it any other toilet before.

Simpo Two

59,946 posts

151 months

[news] 
Saturday 28th April 2012 quote quote all
Might be slime mould.

Bleach should do it.

Mobile Chicane

17,875 posts

98 months

[news] 
Saturday 28th April 2012 quote quote all
Bleach as above (squirt it into all the crannies, leave it overnight and scrub), then drop a Parozone cistern block into the cistern.

However the bigger question is why is this mould forming? Got any anywhere else? Is there adequate ventilation?

I'd buy a cheap (ish) weather station which can monitor internal relative humidity and keep an eye on the readings.

Mould will form above 70% RH, and if it's consistently above that, you've a problem somewhere.

Gingerbread Man

6,887 posts

99 months

[news] 
Saturday 28th April 2012 quote quote all
Mobile Chicane said:
...then drop a Parozone cistern block into the cistern.
Don't do this if you ever need a plumber to do some work with it.

GTIR

24,534 posts

152 months

[news] 
Saturday 28th April 2012 quote quote all
Try regular squirts of Harpic Power Plus.

Works well and keeps the gunk at bay.
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944fan

3,044 posts

71 months

[news] 
Saturday 28th April 2012 quote quote all
Gingerbread Man said:
Mobile Chicane said:
...then drop a Parozone cistern block into the cistern.
Don't do this if you ever need a plumber to do some work with it.
Why not? Not questioning you but genuinely want to know

Gingerbread Man

6,887 posts

99 months

[news] 
Saturday 28th April 2012 quote quote all
944fan said:
Why not? Not questioning you but genuinely want to know
Because any work on a toilet cistern - replacing the fill or syphon, is a horrid job if it's got a load of sediment/ gunk at the bottom. Makes the job messy. Nightmare.

g7jtk

544 posts

40 months

[news] 
Saturday 28th April 2012 quote quote all
Yes it's a horrible job but somebodies got to do it

Total loss

Original Poster:

1,621 posts

113 months

[news] 
Saturday 28th April 2012 quote quote all
Thanks for the reply's so far
Done the bleach up under the rim over night- it comes back, I guess it doesn't get into all the nooks and crannies.
Toilet is in the bathroom, no extractor fan, gets steamed up with the shower on, but no mould anywhere else ever.
You can't even see it, until you clean the toilet up under the rim with the brush and all this black gunk comes out, just don't think it should be there.
Bleach in the cistern was what I had thought to do, just thought I would ask the great PH collective first.

g7jtk

544 posts

40 months

[news] 
Sunday 29th April 2012 quote quote all
Clean off what you can with a brush then spray bleach/ cleaner/ drain cleaner up under the rim. A dose of bleach in the cistern from time to time won' hurt either.
A mini steam cleaner would also help.
Speaking as a Plumber I would take the pan out and jetwash it.

chucklebutty

213 posts

129 months

[news] 
Sunday 29th April 2012 quote quote all
HG Mould remover from Amazon/Robert Dyas for convenience. Bleach doesn't kill some types of mould, it merely makes them stronger :-)

Wings

4,486 posts

101 months

[news] 
Sunday 29th April 2012 quote quote all
Use, spray Spirit of Salts, you will have the cleaness toilet you will have EVER seen, allow for ventilation, window open etc., but NEVER mix any bleach, toilet cleaners with ANOTHER cleaner, chemical.

944fan

3,044 posts

71 months

[news] 
Sunday 29th April 2012 quote quote all
Gingerbread Man said:
Because any work on a toilet cistern - replacing the fill or syphon, is a horrid job if it's got a load of sediment/ gunk at the bottom. Makes the job messy. Nightmare.
Fair enough. Thanks

Ray Luxury-Yacht

8,139 posts

102 months

[news] 
Sunday 29th April 2012 quote quote all
I've fitted out a few houses recently, and you'd be amazed how cheap a new toilet unit is from a trade supplier. Like £50 for a basic white bog.

Simple swap for someone remotely in posession of some common sense. Two pipes - the cistern pipe 'in' and the waste outlet. Swap the seat over (or replace with a new one) and you have a nice, new, gunk-free unit. Then start using some bleach tablets in the cistern from now on and the problem will never return.

That's what I'd do!

Had a quick Google for you - here's one from Screwfix for instance, which includes the cistern too - £59.


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