Floating Floor and Tiles mix?

[DavieA]

Hi all,

Been asked to lay tile on a floating floor thats made up of 3x2 joists sitting on top of a concrete floor and has 18mm ply screwed into the joists.. Is this do-able on this floor type as ive never experienced tiling on a floor of this construction?

The floor also has a slight bounce where 2 sheets of ply meet however I think this could be overcome by either lifting the ply and laying a new whole sheet as room is only 2.5m2 or laying new ply say 12mm ontop of current 18mm ply but am open as always to suggestions?

Thanks :smilewinkgrin:

 

[mikethetile]

you could use hardie backer to overboard as this is only 6mm

or you could as you suggest lift ply and replace as this will take the deflection out

 

[Time's Ran Out]

You obviously have reservations about tiling on it!
You will no doubt be advised never to tile on a floating floor.
Some adhesive manufacturers state that their products are suitable for tiling onto floating floors - but they always put the onus back on the tiler to make the substrate deflection free.
Its your call!

 

[DHTiling]

If it has a frame work then it isn't classed as a floating floor in some aspects but if the frame isn't fixed then this is where movement could happen but you shouldn't get as much movement as you would with a floor just onto insulation like the majority of floating floors are.

The movement you have could just be a joint with no support, so worth checking before you tile and probs will need over boarding for extra stability.

 

[mikethetile]

strictly speaking this isnt a floating floor construction

its one type of warm floor construction where the flooring is fixed to battens fixed to the floor with insulation batts between the battens, this is not a floating floor but often gets called such

the other type of warm floor construction is where the floor is floated independantly on a subbase of insulation, this floor causes problems with tiling as the extra weight may compress the insulation over time

 

[mikethetile]

you beat me to it Dave