Vinyl Flooring in Wetroom

[Pemu]

Good afternoon everyone

I hope everyone is well. 

 

I'm struggling to find good information online about how to build up the floor for a vinyl wet room, ie., what goes on top of the sub-floor, what adhesive to use, how it's set, etc.

I assume that's because these things are usually done by specialist companies. I'm trying to get the best DIY result I can with my limited capabilities. 

 

Scenario: 

I am installing a new bathroom on a suspended timber floor. We have a large family (including kids who aren't always careful) and frequents guests. Previously we've had leaks that have come through to the ceiling below. Although just tiling it all properly would probably mitigate that (as it previously wasn't done properly) I want to go belt and braces and essentially create a wet room floor with a drain in it also. This make cleaning the bathroom easy too as I could clean the toilet much more freely and then wash the water down into floor gully.  

 

Current floor is 18mm OSB and I'm currently looking at Ploysafe wetroom vinyl:

https://flooringking.co.uk/product/nordic-grey-4090/

 

I plan to then take it 150mm up the wall with coving. There's quite a bit of info about how to do that part online. 

 

Now, can I just glue that down onto the OSB or would the screws in the OSB start to show through, or the small ridges in the fibres (as OSB doesn't have a mirror finish)?

If not, what would I put between before the OSB and the glue and how would I secure that? Do I need to lay some things screed? Do I need to use hardboard sheets?

 

Also, what type of glue would be better for me to use? The website lists F44 as recommended but then there's F46 pressure sensitive adhesive. From googling, I couldn't fully understand the benefit of the pressure sensitive stuff over the normal stuff. I've seen in some videos them using contact adhesive. Where is that needed and what's the benefit in that?

 

Also, is it worth me using a tanking kit before putting the vinyl or would the vinyl make that redundant? 

 

It's a small bathroom of only 1.7m x 1.9m so I can do it in one piece without any seams as the rolls are 2m wide. 

 

 

Thanks in advance for any thoughts, advice and experiences.