Are there any tiling experts out there? I’ve got some tiling work to do and I’m confused by the advice I read about tiling over a wood subfloor. I have completed a few tiling jobs in the past, but they were on concrete. The only real problems I’ve had to deal with on the concrete was potential crack movement over time. I’ve used Ditra to deal with that concern. No failures on those jobs after many years.
So now I want to do some tiling on a wood subfloor. 16” center floor joists. Solid wood planking for a subfloor. Probably a 1950s built house. Pretty solid floors, no bounce. What is the best way to proceed?
As I understand it, there are 3 major problems tiling over wood. Flex in the structure, different coefficients of expansion between wood and tile, and adhesive bonding of the different materials.
I think I’m OK on the flex, but how do you really deal with the different coefficients of expansion? A product like Ditra would work, but its $1.50 a sq foot just for the Ditra! Cement board is cheaper, but how does cement board account for the mismatch between coefficients of expansion when it’s screwed to the wood floor with a hundred screws?
I saw some strange new cement board at Menards (Midwest home improvement chain) tonight that was made of a mixture of cement and balls of Styrofoam! It was as floppy as a pan cake! Pretty strange stuff, indeed. How do you use that stuff?