Tiling on caber flooring on a new build

[brickyman]

Hi all. I am tiling a few floors for a friend on a new build. Is it ok to tile straight over caber flooring? Its well fixed down and i was thinking a thick coat of PVA and flexible adhesive and grout should do the trick. Any thoughts?

thanks

 

[stoner]

Hi, never heard of the term caberfloor but it looks like chipboard to me. Personally i would over board with 15mm wbp or tile backer boards. Big no no to pva also, always use acrylic primer for tiling!! Some have tiled on chipboard with no problems but it's not worth the risk.

 

[grumpygrouter]

DEF No to pva...it has no place in tiling. Much better to use a proper acrylic primer and definately overboard with a cement based backer board....as long as you have no deflection!

 

[brickyman]

there is not much deflection so was gona overboard with 9mm ply screwed every 150mm

 

[Ian]

9mm ply is too thin and will warp if it gets wet. Use 6mm hardie backer, much more suitable for the job.

 

[brickyman]

what ply thickness is best then

 

[jwatson]

15mm ply is british standard minimum. when over boading.

 

[Ian]

British standard is 15mm minimum.

 

[jwatson]

and screwed every 300mm or less. i screw 200mm personaly

 

[brickyman]

even if the floor is 15mm chipboard with not much bounce at all