What material would you recommend for a bathroom floor that may be tiled on?

[Beau]

Hi all.

 

As part of my ongoing project of renovating an old farmhouse I'm just about to add an ensuite bathroom to a decent sized bedroom. The current floor has floorboards. I dont want the boards continuing under the stud wall I will be building and want a good base to potentially tile onto. Last time I did an upstairs bathroom I used 18mm T&G ply but I think this is now frowned upon. Whats the recommended materials for this sort of work now? We have not yet made a decision of floor covering but dont want to rule out tiles.

 

Picture of the floor boards in which hopefully you can make the lines were I'm intending to build the stud wall

 

Thanks

[nod]

You can use a cement board 12 mil

Or decoupling Matt Ditra Or Dura 

[MikeGrahamT21]

If you’re wanting to replace your floorboards, go with OSB 18 or 22mm Tongue and Groove, and then cover them with diluted SBR bond for additional water resistance. This can then be topped with @nod‘s suggestion before tiling

[Beau]

Thanks Both

 

Yes I was presuming I shouldn't have floorboards underneath but if I overtopped them with nod's suggested 12mm cement board would that be considered OK? 

 

I have just come across this board that does sound like it might do the job in one https://nomoreply.co.uk/tongue-and-groove-floorboards/. Anyone any experience with it? 

Edited yesterday at 15:57 by Beau

[Canski]

We tiled on to 22mm egger protect which they claim can be tiled directly on to. No problems so far after 9 months.