SHOP PRODUCTS
Houzz Logo Print
bryce_jones57

Single 3/4" ply with Ditra XL or 3/4"+1/2" ply with standard Ditra?

Bryce Jones
5 years ago

I'm getting ready to tile my kitchen. I'm leaning toward using Ditra uncoupling membrane instead of cement backerboard. We have 24" oc joists under 3/4" subfloor. The Schluter site says I can use Ditra XL over a single layer of 3/4 ply or regular Ditra over a double layer subfloor (3/4 and 3/8" layers). My question is, what is better/stronger? The single layer with Ditra XL or double layer with regular Ditra? Already assuming that my floor meets the L/360 deflection requirements for my tile.


Ditra XL sounds like the better option as it would match up with 3/4" hardwood that is going in next to the tile, but if the double layer of ply is the stronger option, I'd go with that as we're putting in a granite island in the middle of the kitchen and a 36" bluestar range along the wall.

Comment