Mould in Silicon Sealant

Molly41

Please could you advise me how to get rid of mould in silicon sealant supposed to be anti mould!
I have tried so many products and it just won't shift. Cant afford to have it redone and DH can't do it because he has a form of arthritis and it hurts his hands I can't do it because Im disabled. 
Any ideas would be so appreciated thank you

neilmcl

How old is it, even the best "anti mould" silicone will eventually succumb over time, particularly if you don't keep up with cleaning it properly. You could try some HG Mould Spray, from most diy stores. It'll pretty much shift anything however if that fails then the only real solution is to remove the sealant and start again. Best products in my opinion are Dow 785 and Everbuild 500. 

Slinky

HG Mould Spray (try and get the foam version) works well if you leave it on for much longer than the instructions suggest. You may need multiple applications over time.

Molly41

Thanks for all your help 3 applications HG foam and it worked well still some there but much lighter so will apply again and leave for two hours.

Slinky

Molly41 said:

Thanks for all your help 3 applications HG foam and it worked well still some there but much lighter so will apply again and leave for two hours.

Keep going, it could take several days. Look on it as a project!

sk2402005

Unfortunately even the best sealant only lasts a couple of years, especially if the mould gets established it will break the seal and leak.

The only mould cleaner i have found actually works is the cillit bang mould remover

ukjoel

May sound like a strange approach but I saw an online article where a woman took her sealant from black (with mould) back to white in 24 hours.  She laid toilet paper over the mould and poured on cheap household bleach.  Left it for 24 hours and came back and mould had gone.....

I tried it and on our bath and replicated her results. Wife was convinced I had stripped and resealed the bath but i hadnt.
Took ten minutes and cost less than a pound.

ukjoel

https://www.dailymail.co.uk/femail/article-7672201/Woman-transforms-bathroom-speedy-cleaning-hack.html
here is the link. I didnt think it would work but it was flawless.

daveyjp

sk2402005 said:

Unfortunately even the best sealant only lasts a couple of years, especially if the mould gets established it will break the seal and leak.

The only mould cleaner i have found actually works is the cillit bang mould remover

No idea what my builder used, but 15 years on and no mould at all.  I think some of the problem is people use far too much sealant and see it as a wonder product.

Ours is a very thin bead, not much wider than a matchstick and it has been perfect since day one.

aylesby

Another vote for HG foam. Do not get on your clothes and wash it off your hands. 

Molly41

Im using a combination of techniques have just tried your idea daveyjp on a particularly stubborn bit many thanks