Tiling onto Ply floor

[iddon]

Any recommendations/advice regarding tiling onto a ply floor? Bathroom area to be tiled is 3 square metres and at the moment is approx 25mm below the floor outside the entrance of the door. I'm thinking of laying 12mm sheath ply and then tile onto to that to bring the floor to nearly level with the floor outside the bathroom

 

[handyman77]

The recommended way is not to tile onto ply. By a tile backer floorboard. Although have tiled on ply floors before just make sure it's flexible adeshive with a separate admixture to make sure it's properly flexible. And the same with grout.

 

[tpt]

What is the current flooring? is it tongue and groove or chipboard?

 

[iddon]

Floor is concrete - it's a ground floor

 

[Richard C]

You can tile directly over a suitable thickness ply floor or overboard & its standard practice with suspended timber floors in anything other than a wet room but it must be WBP not standard ply. I would, however, be wary of laying ply over a concrete floor as a tile base, in this case you’d be better off laying down a suitable SLC or fixing a suitable thickness waterproof backer board to bring the floor level up.

Will the tiling stop at the entrance to the bathroom or is it intended to tile through the entire area?

 

[tpt]

I'd agree with richard on this one. SLC.

We have had some really great feedback on granfix fibreflex just lately and this can go up to 50mm thick. just straight over the existing base.

Another option backerboard, fixed down with tile adhesive, but the above should be much easier