Tiling on chipboard

[jamieled]

Despite extensive reading on here and elsewhere, I'm a bit unclear as to whether it is sensible to tile my bathroom floor directly onto the chipboard.

 

Floor is 22mm caberdek glued and screwed to wide posi joists. No noticeable movement in the floor.

 

If this is a bad idea, what do I need to do? Would like to avoid adding ply if possible.

[nod]

Short answer is No

You can use Ply cement board

I always use Ditra matting 

Stuck down with Ardex adhesive 

Tile same day 

[nod]

2 minutes ago, nod said:

Short answer is No

You can use Ply cement board

I always use Ditra matting 

Stuck down with Ardex adhesive 

Tile same day 

 

[CC45]

We did as per @nod - bomb proof.  Glue (Ardex AF200 I think) is sticky as hell.  You need a 3mm tiling trowed to put it down.