Tile backer for wooden and concrete floor

[Ian Black]

Hi there, my situation is this....
I want to lay quartz sparkle floor tiles onto part suspended timber uninsulated floor t&g boards, part uninsulated concrete. Can have maximum overall floor rise by about 30mm. Decision, what backer boards to use?

Is 6mm ok to use on old timber floor, with minimal deflection etc, or is it worth going 10/12 mm or even 2 layers 6mm?

Can you float the boards over the concrete area, adhesive with mechanical fixings. Or, board up to it and self level compound with a expansion/movement joint at the junction?

The use of full cement board (Knauf Aquapanel/Gypsum Glassroc H) or insulated board (Marmox/Orbry)

Any problems with Quartz tiles etc? (Wife likes the bling!!!) Recommend a supplier.

I know they are expensive tiles, so want to get it right.
Any assistance would be appreciated. Cheers

 

[Flintstone]

I would treat each surface as separate, as in don’t bridge the gap with tiles or board. Use a board such as wedi, marmox, jackoboard, on both areas, glued on the solid floor, glued and screwed on the timber. Go as thick as you can. No benifit to using 2 layers of 6 as you are still tiling on 6mm. Better to go with one board 12mm

 

[Porcelainwood]

Curling can be a problem if the right adhesive is not used best to ask adhesive recommendations. Crystalline water binding adhesives are probably best to use

Any problems with Quartz tiles etc?

 

[Dougs Third Go]

quartz tiles don't like under floor heating, you hadn't mentioned if it was being installed or not, just thought I'd chuck it in there

 

[Ian Black]

Thanks Guys, no underfloor heating and the right quick set adhesive.