Share
Welcome to the Bunnings Workshop community @Heary. It's wonderful to have you join us, and many thanks for your question about waterproofing.
It's important to understand that if water is leaking through the tiles and it's not being captured by the waterproofing membrane beneath, there are likely more significant issues at play.
I'm not aware of any waterproofing membranes designed to go over tiles. However, products like Shower Plug do exist, which can be applied over tiles and grout to seal hairline cracks in the grout. But if the underlying membrane is compromised, that’s a much larger problem that needs addressing. I note the product you've referenced is suitable for cracks up to 0.5mm in width, so it seems like it has similar attributes to the Shower Plug. However, I would be hesitant to call Shower Plug a membrane as it's really just a bandaid solution to an issue that should likely be addressed through other means. It's great, though, if you can't actually see where the cracks are to address them.
It would be helpful to know more about the issue you're facing. If the waterproofing membrane is still intact and the leaking water is being directed to the drain as it should, then it’s possible that regrouting the tiles and using silicone to seal any gaps might solve the issue. If the membrane is compromised, though, you’ll likely need to address that first to properly fix the leak.
Please let me know if you have any questions.
Mitchell
You certainly can, @Heary. You only need a paintbrush and a cloth to remove the excess solution.
Remember to check the grout or silicone in the corners of the shower base. If it's missing, you should first re-seal it with silicone. Here's a helpful guide: How to apply silicon sealant.
Mitchell
