Putting down hardi six mil boards down on floor for travertine tiles

[beanz]

Re: Putting down hardi six mil boards down on floor for travertine til

I understand what the membrane is for, just not sure it's needed in this situation, as two layers of flexible adhesive should (I would have thought) be enough to take up the lateral movement. Up until recently, i'd always overboarded with 12mm Ply, and tiled directly onto this.. I've changed my method recently, as i can see that Ply could shrink enough to be a problem, but saying that not had a fail yet luckily..

 

[Ian]

Re: Putting down hardi six mil boards down on floor for travertine til

It is a very belt and braces approach, I'm usually happy with just cement board if the floor is not heated, but if the combination is, wooden substrate/heated/soft stone, I'd always opt for the membrane, doesn't take much to crack trav/limestone/marble.

 

[beanz]

Re: Putting down hardi six mil boards down on floor for travertine til

Yeah i can see why you might go down that route if it was heated actually.. A lot more movement. 😉