Concrete and Wooden Floor

[leeboy]

Have just had kitchen extension built and am now left with half concrete half floor boards. I want to lay ceramic tiles and was wondering what preparation the floor would require. Marine ply? Hardboard?

 

[Concept PHT]

Fix your boards down and seal, then maybe use a latex levelling compound to level it all off nicely.

Tile as normal from that.

 

[leeboy]

I am a complete novice can you give me a bit more advice about how you fix and seal floor boards.

A few people I have spoken to said that tiles are prone to cracking where the concrete floor butts up against the floor boards. Will the latex levelling compound address this?

That is why I thought you had to cover the concrete floor and floor boards with ply?
Have I been mislead?

 

[Concept PHT]

best solution is to fix ply over your floorboards to fix them, then bring the level of your concrete floor to the level of the wooden floor - either using a compound or sand/cement screed (if its really bad) then tile as normal, using flexi for the boards and normal for the concrete.

 

[UKTT Darren]

The solution would be to fix ply to the wood floor and screw down every 300mm, be carefull of pipes. Use a leveling compound or PTB (pourable thick bed adhesive) on the concrete to level, up to the ply. Your set out will be dictated by the movement joint between the two surfaces, you will have to set your tiles out either side of the joint so as a tile is on each surface leaving a 6 mm expansion joint in between, fill this with silicone the same colour as the grout and use 5 mm spacers over the rest of the floor so as not to make the silicone stand out.
From North East Tiling Training Gaffa.