Tiling over tiles

[Tjs]

Hi I'm about to have tiles done and I'm going to be tiling over old tiles, now there are a few of the old tiles missing some little bits and some spanning to 300mm long, the tiler said that I should fill these old missing bits with self levelling compound, as its a small amount I was seeing if there was any thing else to use instead of self levelling? The old tiles are on plywood/concrete.

Thanks

 

[pinenot]

Bits of the same thickness old tiles...pinenot

 

[joe-90]

He's not much of a tiler advising that.

 

[cotswoldbuilders]

Remove all the old tiles and start again.

 

[Tjs]

Not removing old tiles, no need too. Was seeing is there something else to use apart from self levelling.

 

[dann09]

FWIW:

the join at the wood and concrete might be a weak link, unless its already been treated as a crack or a movement joint.