Bathroom Floor - Advice needed.

[besenzig]

Hi

I am tiling a bathrron floor with 600mm x 300mm polished porcelain tiles. The floorboards have all been removed and new WBP 18mm plywood laid, the edges and underside has been sealed with Mapei Priner G and screwed down every 150mm.


I was planning to tile directly on to the ply with Mapei Keraquick + Latex plus. Just wondering would it be
better to overlay the ply with backer board and tile directly on to this rather than the ply. If so
should the backer cement board be glued and screwed down.

I am just thinking ahead if the tiles ever need removing it would be easier to do if the backer board is laid on top of the ply and screwed down rather than glued. This would then leave a clean ply IF the tiles were ever changed....(probably not in my lifetime anyway). Or is all this just an unneccessary expense and work.

Your views would be appreciated.

 

[bugs183]

A backerboard such as Marmox or Hardi is the way to go, ply isn't an ideal surface to tile.
Fix the boards to the ply with the Keraquick, and screw down as well. Your floor should be fine to tile on now.
I get asked about removing tiles at a later date, you can't really apply that to floor tiles, always fix the floor as securely as possible, if you try and make anything easy to remove it will fail, and the chances are you'll never change the tiles anyway.
Enjoy!

 

[Aspect Tiling]

As above. The cement board is glued as well as screwed to fill any voids between the board and the ply.

 

[besenzig]

A backerboard such as Marmox or Hardi is the way to go, ply isn't an ideal surface to tile.
Fix the boards to the ply with the Keraquick, and screw down as well. Your floor should be fine to tile on now.
I get asked about removing tiles at a later date, you can't really apply that to floor tiles, always fix the floor as securely as possible, if you try and make anything easy to remove it will fail, and the chances are you'll never change the tiles anyway.
Enjoy!

Hi Bugs, thanks for the qjuick response. Do you think I still need to add the Mapei Latex Plus to the Keraquick when glueing the cement board to the ply and then again when fixing the tiles to the cement board or is the flexibility that the Latex Plus gives not required when using the Marmox/Hardi boards.

Thanks

 

[bugs183]

If you're budget will allow i'd use the Latex Plus for gluing the boards and fixing the tiles, it might been seen as overkill, but it does no harm to take the 'belt and braces' approach.

 

[besenzig]

Thanks for that very helpful, do you think I can get away with 6mm boards or should I go for 10mm. Missus wants to keep the step as low as possible.

 

[Aspect Tiling]

6mm boards will be fine

 

[besenzig]

Many thanks for your help ans patience.