Shower enclosure substrate with tiles + paint outside

[AndyOnTheWeb]

There's a lot of conflicting information about this topic and my specific scenario so I'm forced to raise a similar question to some of the other topics.

I have a small bathroom, 2mx2m, with a shower enclosure in the corner. The walls are wooden studded with some form of plasterboard on top. I need to completely replace the plasterboard on both walls. I want the shower area to be tiled with a glass enclosure, and the remaining parts of those walls to be painted. The tiles are very likely to be large (25-30cm) and I'm in the UK.


Some people say I can use moisture resistant boards throughout and tank them for the shower area. Some say a tiled shower needs to be cement board or Aquapanel.

If I use tapered edge moisture resistant plasterboard then I get the advantage that I can paint the remaining wall without getting a plasterer involved. Assuming that the joins of the tapered edge stuff is actually a smooth finish and all the filler type stuff is cheaper than a plasterer?

So I could....

a) Aquapanel the whole thing; tile the shower area; then get a plasterer to plaster the remaining parts of the walls.
b) Moisture resistant plasterboard the whole thing; tank and tile the shower area; smooth the remaining gaps of the remaining walls.
c) Aquapanel the shower area; MR the remaining walls; (make sure there is a stud at exactly the correct place)

I assume that I need to ensure there is a stud where the new shower enclosure is going to be fixed to the wall? Option C would need that anyway.

Are there other options or variants? I'm going to guess that all three will technically work but any advice will be greatly appreciated.

Thanks,
Andy

[wine~o]

Option C for cheapness/easiness.. skrim tape and filler between cement board and the plasterboard.

[AndyOnTheWeb]

That's great, thank you.

Andy