Tiling on 6mm ply floor.

[M83T]

Hi everyone, a friend has asked me to tile their bathroom floor, it's a very small area around 5m2 I would say, it has chipboard floor boards at the moment which he has screwed down well and he is going to overboard it with 6mm ply screwed down well.
This is what he wants me to tile on, if it yes me I would use hardie board or similar and then anti fracture matting but he just wants to go with the ply.
Is this going to fail, I think it will but just want to get some other opinions then I can show him and he can decide what to do.
Thanks

 

[J Sid]

You are correct to not tile 6mm ply. Use hardie or similar and no need for matting

 

[LM]

Hi everyone, a friend has asked me to tile their bathroom floor, it's a very small area around 5m2 I would say, it has chipboard floor boards at the moment which he has screwed down well and he is going to overboard it with 6mm ply screwed down well.
This is what he wants me to tile on, if it yes me I would use hardie board or similar and then anti fracture matting but he just wants to go with the ply.
Is this going to fail, I think it will but just want to get some other opinions then I can show him and he can decide what to do.
Thanks

You can’t tile on ply never mind 6mm.
Overboard it properly with a tile backer or insulation board.
What size and type of tiles are you laying?

 

[GoneGuy]

as mentioned in reply’s, also the tile backer boards are available in 6mm

 

[Old Mod]

If you tile on 6mm ply, will you go to Jail?
You won’t actually be breaking the Law, but some say you should be!
OH! Sorry “is it going to FAIL?”
Same answer really.
Over boarding with the correct material would certainly save you from the showers.

 

[Dumbo]

6mm Hardie backer glued and screwed , ply will fail , if he still wants you to proceed tell him as he is your friend you won't do it because you don't want to waste his money and this could lead to a problem between you .

 

[Steve6690]

He's asking you to tile his floor because you're more skilled than him, but he wants to tell you how to do it ?
Locally to me it would cost £35 for the ply and about £60 for the Hardiebacker. If/when it fails he'll blame you - maybe not to your face - but he'll tell everyone it's your fault.

 

[M83T]

Cheers for all the feedback, I know it's going to fail so I will have a word with him and explain the situation and see how he wants to proceed.

 

[Unused Account 1]

Ditra straight onto chipboard flooring my choice

 

[M83T]

Okay so my friend has decided to buy hardie backer to do his bathroom floor so I'll start tiling at the weekend, he's also got some matting. Tiles are 300x600. 12mm notched ok to use?

 

[Wayne Brown]

Tile straight on the Hardie would be my advice . Kop

 

[Unused Account 1]

Ditra matt ,youve got the flat chipboard flooring,add more screws to secure further ,then ditra

 

[Steve6690]

If he's bought the mat it seems daft not to use it.

 

[Flintstone]

Ditra matt ,youve got the flat chipboard flooring,add more screws to secure further ,then ditra

You don't use uncoupling membranes straight onto Chip board. It needs to be over boarded.

 

[Boggs]

From Schlüter website.

As long as the substrate is capable of taking the weight of the tiled surface, Schlüter®-DITRA 25 can be applied directly to any existing timber -- including plywood and chipboard.
And even in older properties with butted planks, small gaps of around two millimetres between the joints can be successfully bridged with membranes such as Schlüter®-DITRA without the need for fillers.