Black mould on bathroom sealant - how to fix

[AT]

Our bathroom sealant has turned black with mould. Can this be fixed using some substance, or do I need to replace it? If it needs replacing, can I stop it from happening again?

[Big Al.]

Sounds like it's removal time, you can get anti fungicidal Silicone, it ain't cheap but I've used it over the years and the mould problem is a thing of the past.

[RedLeicester]

Once it's gone, it's gone. Time to rip it out and start again. Fungicidal bathroom silicone is only a few pounds a tube.

[prand]

I've used neat bleach before poured on and left for 24 hrs. Might be worth a try.

[TVR1]

BAL microban or Mapei sanitary (lots of colours) Screwfix is inexpensive. www.screwfix.co.uk.

And if you are worried about making a balls up http://www.cornertape.co/main/en/products/11-corne... is your friend.

Edited by TVR1 on Tuesday 19th July 16:36

[Diablos-666]

Vodka works a treat too

[ghamer]

Just replace.

[budgie smuggler]

How about black spots of mould on the grout? Doesn't come off with scrubbing, have tried bleach/chlorine sprays.

[blueg33]

It sounds like you need better ventilation to help reduce mould in the future.

[TVR1]

budgie smuggler said:

How about black spots of mould on the grout? Doesn't come off with scrubbing, have tried bleach/chlorine sprays.

same problem. The hyphae of the mould has invaded the grout and bleach etc will only kill the surface mould. The best (but most painfull) solution is grout removal and then use anti-bacterial grout.

[AT]

Thanks all - it sounds like it's a removal job as it's solid mould and I've given it a good scrubbing to no avail.

[Toyowner]

We had the same issue here, couple of bottles of this liberally applied and left to work did the trick.

Be warned though, keep the windows open, its evil stuff to inhale.

http://www.dettol.co.uk/mould-and-mildew

[budgie smuggler]

TVR1 said:

same problem. The hyphae of the mould has invaded the grout and bleach etc will only kill the surface mould. The best (but most painfull) solution is grout removal and then use anti-bacterial grout.

Bugger. Oh well, least I know what I need to do now.

[Simpo Two]

TVR1 said:

hyphae

Technical Prize of the Week!



Hope anti-bacterial grout works on fungi...

[TVR1]

Simpo Two said:

TVR1 said:

hyphae

Technical Prize of the Week!



Hope anti-bacterial grout works on fungi...

depends on if they have a nucleus, or not. Then it is something else.....very very scary!

Edited by TVR1 on Tuesday 19th July 22:49

[Defcon5]

Toyowner said:

We had the same issue here, couple of bottles of this liberally applied and left to work did the trick.

Be warned though, keep the windows open, its evil stuff to inhale.

http://www.dettol.co.uk/mould-and-mildew

I have some of this, it really works.

[Simpo Two]

TVR1 said:

depends on if they have a nucleus, or not.

As we're having a private tech-fest; I'd have thought cell wall structure was more important - bacteria (both kinds) are tougher.

Your go

[VxDuncan]

Defcon5 said:

Toyowner said:

We had the same issue here, couple of bottles of this liberally applied and left to work did the trick.

Be warned though, keep the windows open, its evil stuff to inhale.

http://www.dettol.co.uk/mould-and-mildew

I have some of this, it really works.

It's basically just diluted bleach though. Thin bleach will do the same. One way to sort the grout its to hold bog roll on the grout lines with bleach to make them damp. Push onto the grout and leave the bleach to soak in overnight.

[Andyuk911]

100% this will work

http://www.domestos.co.uk/products/specialist.php?...

Grot Buster

I was gob smacked how good it was .....

[Dr Doofenshmirtz]

VxDuncan said:

Defcon5 said:

Toyowner said:

We had the same issue here, couple of bottles of this liberally applied and left to work did the trick.

Be warned though, keep the windows open, its evil stuff to inhale.

http://www.dettol.co.uk/mould-and-mildew

I have some of this, it really works.

It's basically just diluted bleach though. Thin bleach will do the same. One way to sort the grout its to hold bog roll on the grout lines with bleach to make them damp. Push onto the grout and leave the bleach to soak in overnight.

The Dettol stuff definently removes the mould better thin bleech - it's excellent stuff.