Bathroom wood floor

[robbieraven]

Hi all,

About to start a bathroom floor for some friends in a couple of weeks, I'm relatively new to this so appreciate some advice, on lifting the carpet I noticed it's a mix of ply and chipboard, and seems relatively flat and sound, I have rad much about the movement of wooden bases, so I thought about laying new 6mm ply, with the tiles on top too the height is going to cause a few snags. Then I thought I could Dita it, be good to learn something new? Any thoughts?

Thanks Rob

 

[nybor62]

6mm ply is big no no
can you not remove the ply and chip board and replace with min 15 mm wbp ply then over board with 10 mm cement board glued and screwed
i understand were ya coming from with the height issue , if your floor is sound with no deflection you may be able to over board over the top with 10 mm cement board again glued and screwed
what tiles are you laying

 

[robbieraven]

Sorry typo, bad morning, that should have been Ditra

 

[robbieraven]

Thanks, will look into this.

 

[robbieraven]

This looks like it may be the answer? Hardiebacker DL Leaflet 1110.pdf

 

[ian158]

Whilst most on here say a big no no to 6mm ply, I ripped up a bathroom in ashover Derbyshire last year, this had 6mm ply nailed to floorboards, it had been down since 1984, all I can say is, it was one hell of a job getting them up. There was no cracking, the bathroom was fine, just needed updating, not condoning it but 20years and it was fine !!,,

 

[kilty55]

ian we have all found 1 or 2 jobs where bad methods have lasted the pace....however i have found hundreds that havent,please dont put these ideas in peoples heads.


cement board over it as long as there is no deflection in current floor to avoid big height increase

 

[robbieraven]

Just grateful for any advice, one thing you never learn on a tiling course is the unique-ness of every job and the challenges that you face when you walk into a bathroom that needs doing, that can only be learned by time and experience. Great forum, great guys.

 

[ian158]

Fair enough, since been on here, I no longer use ply after reading horror stories , I fix 6mm hardibacker, period.