SLC directly onto chipboard?

[The Bonito]

I've just lifted up an old mosaic tiled bathroom floor to find levelling compound directly onto the chipboard floor.
How do I level it for re-tiling? Is there an easier route than laying ply over the top, re-levelling, and lifting all the fittings by a couple of centimeters?
Thanks for any advice

[cornish_crofter]

There are easier routes but I would scrape it off and lay 6mm ply over the top, first making sure that the chip board is secured properly.

[Sir Ramic]

6mm ply is far too thin. If you can go with 6mm then you could use a tile backer board.

[cornish_crofter]

I thought 6mm ply was the standard prep for tiling onto suspended timber floors Neale?

I would agree, the 6mm Hardibacker is probably a better product though.

[grumpygrouter]

I thought 6mm ply was the standard prep for tiling onto suspended timber floors Neale?

I would agree, the 6mm Hardibacker is probably a better product though.

Only if you are a joiner Hugo.....6mm is far too thin IMO. More chance of getting voids underneath I feel. Would prefer prsonally to go straight down onto chipboard with Ardexflex 7001 or even (god forbid!) fastflex if I had to!!

[cornish_crofter]

If overboarding, what thickness would you use?

[grumpygrouter]

If overboarding, what thickness would you use?

With ply hugo and the floor is solid, you might get away with 9mm but 12 would be better. Personal pref now is Hardiebacker 6mm.

[mikethetile]

I thought 6mm ply was the standard prep for tiling onto suspended timber floors Neale?

I would agree, the 6mm Hardibacker is probably a better product though.

18 mm is reccomended on suspended wood floors as any thing less flexs with the floor

6mm hardie backer well fixed down will do the same job

[doug boardley]

given the choice, 6mm hardiebacker for me

[cornish_crofter]

Ignore my first post, the real experts have spoken, not the pretender that is me!