I have used perma-white for bathrooms and it's great in terms of application and can be tinted, with less variety than Dulux etc. I can't speak to its effectiveness but Zinsser claim its scrubable so even if mould does start to build up it can be got rid of.
Watertite is an oil based waterproofing paint. It's really designed to be used on basement (or other) walls where penetrating moisture is an issue.
I suppose you could use it but this
Watertite® Waterproofing Paint has a unique solvent based formula that combines a state-of-the-art waterproofing resin with Portland cement to create a coating that stops up to 34psi of water pressure.
Makes me think that it would be somewhat problematic to redecorate should the desire take you down the line.
If you have an issue with black mould in your bathroom this would probably cover it up at the very least but it seems a bit extreme and as a specialist paint will likely be expensive.
I have used perma-white for bathrooms and it's great in terms of application and can be tinted, with less variety than Dulux etc. I can't speak to its effectiveness but Zinsser claim its scrubable so even if mould does start to build up it can be got rid of.
Watertite is an oil based waterproofing paint. It's really designed to be used on basement (or other) walls where penetrating moisture is an issue.
I suppose you could use it but this
Makes me think that it would be somewhat problematic to redecorate should the desire take you down the line.
If you have an issue with black mould in your bathroom this would probably cover it up at the very least but it seems a bit extreme and as a specialist paint will likely be expensive.
TLDR I'd stick with perma-white