Tile flooring depth

[slamblam]

Hi all,

We want to lay a Victorian style mosaic tiling in our hallway about 3m long. The floorboards are 2cm thick and the tiles will be 1cm thick.

What's the best way of doing this? If I cut the floorboards out and lay 15mm ply say, they will be raised by a good 8mm with the adhesive. Is this just the way it has to be be or is there a way of getting it flush when it joins the floorboards?

Thanks

 

[Deluks]

15mm probably won't cut it, you really need to tile onto 18mm ply.
You might be able to lay ply on battens between the joists, then lay a cement based tile backer board over the lot, then your tiles. Save you a few mm.