Tiling on water resistant chipboard

[Ivan Rubery]

Ok thanks, brilliant advise, i really appreciate the help on here. The customer looked annoyed when i told her about the floor and kept asking how much. They are already recycling the radiator and taps that i have removed for cash, and keep saying thry dont want to overspend !!! Sometimes i wonder about folk.

 

[Old Mod]

Well tell them they'll be spending double if they don't spend an extra £100 now!

Anti-fracture Matting for Floors Subject to Limited Movement | Tilemaster Adhesives

 

[Ivan Rubery]

Thanks for the link

 

[Dan]

Sounds like we need a test, deaaaannooooooooo?!?!?!

 

[Ivan Rubery]

Brolliant advice, thanks very much.
1 more question, will the existing 18mm chipboard be strong enough if I use this anti fracture matting. The floor tiles are ceramic, 9mm thick and about 300mm square ?

 

[Alan.P]

As long as there's no deflection in the floor it should be fine.

 

[Ivan Rubery]

Again, thanks for all the help

 

[AliGage]

No damage to the chipboard taking the Ply overlay up then?

 

[Ivan Rubery]

No, a few little holes where screws had been, but was thinking of just filling them, its not too bad

 

[AliGage]

I had to remove the plywood as floor was too high, or would have been. This was cemented and screwed to the chipboard and was a lot of fun to remove !!!!

It's only you said the 9mm ply was cemented and screwed.
Have you managed to clean up the floor ok then?

The quickmat decouplers need a flat clean surface before fitting.
I still think you need to overboard the chipboard. Which raises you 6mm plus addy. I'm struggling to see how there is a concern over a big step up from the carpet. Underlay and carpet is what? 12mm.
So overboarding with a backer, addy, plus tile would create a step, worse case 8mm?