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How to caulk bathroom basin?
Hi everyone!
I removed the mouldy very tough seal from the rear of the bathroom basin with the help of Monarch silicone remover and a Stanley FatMax utility knife.
Then cleaned up with Methylated Spirits (great on cleaning, tough on hands!).
I've got Selley's Wet Area silicone sealant to do the job.
I now have is a gap that's about 8mm deep and a range of 5 - 6mm in height that needs to be filled. The problem is when I tried it for size, the nozzle of the caulk sealer is too fat to reach into the gap! Do I wedge some polyfiller in through to the rear and then caulk over the top of that when it's dry?
Any suggestions from the
Community Brains Trust?
Cheers 🤗
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Re: Tips needed for caulking job
Hi @Tyro,
The tip of the nozzle does not need to fit inside the gap; in fact, you don't need to fill the entire cavity behind the opening. Simply place the nozzle against the gap and extrude the silicone as you move along it. Keeping the nozzle hard against the gap will pump the silicone partially inside it. After you've finished filling the gap, smooth the silicone off to form a cove between the tile and the sink back. It's this cove you're trying to establish and seal the gap. Filling the void is of lesser concern. Here's a helpful guide: How to apply silicone sealant.
If you wish, you could insert Moroday 6mm x 5m White Gap Filler Rod to fill the void.
Please let me know if you have any questions.
Mitchell
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Re: Tips needed for caulking job
Thank you BrightStar @MitchellMc
Once again your clear- headed advice has lifted an impending headache! On tomorrow's trip to Bunnings I shall buy a plant in honour of your sagicity!
Humble Cheers! 🙏🏻🤗
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Re: Tips needed for caulking job
Caulking is a skill I am still perfecting but have found I get the best results if I wait a few minutes after laying down a bead of sealant and then use a soapy finger as a forming tool (make sure you keep redipping in the cup of soapy water) 😊
BTW I don't have any issue with Methylated Spiriits but I do notice a definite burn if exposed to switch contact cleaner...

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