Will this sort out a floating floor ???

[poynton phil]

Stripped the tiles off a 1st floor apartments, Bathroom floor today to find its a floating floor. The reason the floor has failed, is due to a split bead of silicon along the shower tray,where the resulting leak as rotted the floor. I want to replace the floor, and make it a more stable surface for tiling. The actual floor is made up of what looks like concrete beams with a layer of polystyrene about 4 or 5 cm thick, with chipboard on the top of that. I plan to remove the chipboard, and polystyrene, and then secure beams the same thickness as the polystyrene to the concrete, replace the polystyrene, and then replace the chipboard with 18mm marine ply, and then fix 6mm cement board and tile. Does this sound alright, and would it be better to screw the beams down, or glue them with the same type of glue used to put solid wood flooring down. Not to sure about using a hammer drill on the floor, as there is an apartment below. any advice will be appreciated. Thanks.

 

[DHTiling]

As long as the batons are solidly fixed then the floor can be screwed down, then it will be fine..

 

[Spud]

you will need to use a sound insulation barrier such as polysilent or equivalent if you screw to the timber to the concrete beams

 

[poynton phil]

Thanks for that gary, do you know anywhere that sells polysilent, and the sort of cost i can expect.

 

[mikethetile]

gary beat me to it

dont screw down as it will transfer sound/vibration, its better stuck down

 

[poynton phil]

Thanks guys. So screw batons to the concrete, screw 18mm ply to batons, screw and spf cement board in place, spf polysilent, or ditra sound ( which ever i can source easier) in place then tile.