Tiling over screed/plywood floor with height differences.

[Johnny]

If the timber floor is level and the concrete is up and down, grind off the bumps. You can use a 7'' angle grinder with a diamond cup and a shroud to do so.


There will be a movement between the two floors. Out of the question.

Only the almighty knows if there will be cracks in that floor. Aren't you going to use an uncoupling membrane on top?

If the customer wants an expansion joint. Then do it and it is safer.
Most don't like the idea of having extra joints/trims on the floor.

Yes i would use an uncoupling membrane but i assume even this would not stop the tiles cracking.
Is an expansion gap the only option in this situation. She wanted the tiles brick style.

 

[Tile Marble Granite]

Yes i would use an uncoupling membrane but i assume even this would not stop the tiles cracking.
Is an expansion gap the only option in this situation. She wanted the tiles brick style.

As far as I am concerned the tile shops sell uncoupling membrane as anti-crack. You can call the tile shops and ask

You can check out the US market, you might find different products: peel & stick, rubber membrane. All these products do the same as Dirta
The other option is the expansion joint

 

[Johnny]

On a side note is 6mm ply screwed to a chipboard floor acceptable practise for tiling onto ?

 

[Tile Marble Granite]

On a side note is 6mm ply screwed to a chipboard floor acceptable practise for tiling onto ?

If it is solid then its ok, you will use uncoupling membrane on top.