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If you've tried cleaning mould from silicon previously, the mould has likely stained it. If this is the case, no amount of scrubbing or applying cleaning products will remove the stain from the surface.
Unfortunately, removing the silicone and replacing it with fresh caulking would be the best course of action.
Here's a helpful step-by-step guide on How to apply bathroom sealant.
If you are not keen on replacing the sealant, try 30 Seconds 1L Shower Cleaner. It might not remove the marks entirely, but it should make them less noticeable.
Before using the product, it is best to open any windows in the room and run the exhaust fan. Also remember your personal protective equipment including a face mask, gloves and safety glasses. - MitchellMc
I have had success with using vinegar to kill and stop the growth of the mould and then using something like bleach to remove the staining in some cases.
The way I found to keep the liquid on the silicon is to using toilet paper or the like, spray it then push it up against the silicon to make it stay there and lesson it drying out so you can leave it there for a few hours. Never mix the two together though as it creates chlorine gas, wash well with water in between each chemical. - MrSober
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@MitchellMc This is another problem in our shower we need to fix
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Hi @mich1972
If you're planning on changing the silicone edging in your bathroom, I suggest using a Trojan Safety Scraper With 5 Blades. It's sharp enough to pick up and slice out the old silicone stuck in the corners. If you happen to run into really stubborn spots, I suggest using a Craftright 5-in-1 Scraper, its multipurpose head is strong enough to scrape and gouge out any stubborn silicone.
My number one tip is to make sure that the area has been washed with soap and water. Make sure that it is dry and clean before applying the new silicone sealer.
If you have any other questions we can help with, please let us know.
Eric
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Hi @EricL @Thank you for replying so quickly. Thank you for your suggestions we appreciate it. When you say wash it with soap and water, do you mean Sugar soap ? I have that ?
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Hi @mich1972
I suggest using ordinary laundry detergent soap. Your goal is to remove any residual moss and mould on the surface and corner of the shower before you apply the new silicone.
Eric
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@EricL Ok great thank you 😊
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Excellent tip. 👍
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Decpite the terrible reviews @MitchellMc Yesterday I had to remove all the mouldy corner silicone from a shower and used one of these sealant removers for a couple of dollars. If used correctly the corner edge is actually is very effective. The flat section is ok, and won't damage the aluminium frame, but a metal bladed scraper did the job on the flat surfaces. Removing silicone is a time consuming job at best to do it right. The alternative was a Selleys grout remover which stated a min 2hrs to take effect plus cleaning the silicone down. But for $6 and 30-45min of manual labour I thought was great value.
Nailbag
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Thanks for the feedback as always @Nailbag. We appreciate you sharing your experience with the community.
Jason
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