floor tiling on timber and screed

[peckers]

Hi again Thank You All for replying. To try and understand from my point of view as to what is being said.
1. An expansion joint needs to be installed along the line of the join between the timber floor and screed.
2. Insulation boards laid beneath the underfloor matting covering the whole floor with the expansion joint seperating the two floors.

If that is what is being said perhaps someone might confirm.
Would an uncoupling membrane such as Ditra be of any use??

Any help is appreciated

That's what I would do as to the decoupler mat what tiles are you using?

 

[DHTiling]

Is the join between the 2 floors a straight one.?

 

[MDD]

Thank You, Yes the join is a straight join and I have to find out what tiles are being used

 

[DHTiling]

Then Yes! use a movement joint.. this could be a pre-formed joint or a cold joint..

 

[MDD]

Thank You, appreciated.