Plasterboard or Plywood

[Molster]

Hi
Never used a forum before - so hope I get this right!
I have a question regarding preparation, not tiling. I'm making ground floor bathroom into a wetroom. The walls are brick with no cavity. Size 2m.20 x 2m.50 x 2m.60 floor to ceiling. It was originally battened out with 25mm timber, with 25mm insulation and plywood sheets fixed to the battens. My intention is to fix 50mm battens to the original battens and put another 50mm insulation in. The room will be fully tiled, and kitted out for a disabled person. That's the background - now the question. What would be the best material to line the room, and tile onto - 12.5mm moisture resistant plasterboard - or 20mm plywood?

 

[GazTech]

Hi Molster, welcome to the forums..... backerboards is the best in this situation....Gaz
DoBuild Direct Ltd - Ply, Insulation, Plasterboard, Timber

 

[MICK the Tiler]

G'Day and welcome to the forums

 

[brian c]

i agree with Gaz on this one m8.

 

[White Room]

Hello and welcome Same as above

 

[Olz]

Welcome to the forum

 

[CJ]

Hi Molster, & welcome :hurray:

I'd go with Gaztech's suggestion and go with Hardibacker 500. 12mm cement board

 

[LM Ceramics]

welcome to the forums m8

 

[Molster]

Hi Molster, welcome to the forums..... backerboards is the best in this situation....Gaz
Thanks Gaz - backerboard it is!

 

[Molster]

Thanks for reply Brian - Backerboard get the vote!

 

[Molster]

Thanks for taking the time to reply - seems like Backerboard gets everyone's vote!

 

[Molster]

:Cheers! Will be using Backerboard - everyone says its the best!

 

[DHTiling]

Hello and welcome to tilers forums.......when you say no cavity....is there any signs of damp..?...what measures have been taken for damp...?

 

[Molster]

Hi Dave - good point - The room was originally battened and boarded out over 20 years ago, but I can see no signs of damp anywhere, except where the bath waste had leaked!

 

[DHTiling]

Right fine.......I would go with gaza's advice but maybe Dot&Dab the boards on with cement based adhesive direct to the brick work....this will give flatter walls if the brick work is slightly out as battening will just follow any lumps & bumps unless you spend time packing out etc...Dot&Dab will be much quicker.....