floor tiling - plywood base thickness?

[tomtomdrum]

Hi there. I have a largish room that I want to tile, in my flat (100 years old, convered from a house). At the moment, it has a floating floor (solid wood) that has warped - probably caused by leakage, but not yet investigated. The wod is about an inch thick.

Anyway, I want to rip that flooring out and tile. My question is: can I "get away with" a 12mm plywood base? Is 18mm overengineering?

If I can get away with a 12mm base, that'll be good news. The aesthetics will be much better, as the base + tile thickness will only be about the same as the current wood base, so everything will join in that much better. But if I do need an 18mm base, then fine. I'd rather have everything working than have cracked tiles after a couple of weeks ...

Thanks for any help!

Tom

 

[Moz]

tomtomdrum
tbh ... dont try too save on a good substrate
18mm ply......all the way

 

[gcol]

18mm is a minimum and is not over-engineering.

 

[tomtomdrum]

thanks for that. I was hoping for a different answer, but expecting this one. It's always good to hear from voices of experience, tho' !

Best wishes,
Tom

 

[Moz]

tomtomdrum
get it done right OR...... it will haunt you ...lol..lol