Garmaine Staff asked 2 years ago

I have poured the preslope on the cement floor, and installed the Oatey PVC membrane and 3 piece drain.

I would like to use Kerdi board on the walls, but not the floor. Can I install Kerdi board next on the walls bring it down to the membrane?

After the Kerdi goes in, I would pour the final slope for the shower floor and tile overtop.

I like the Kerdi product for my walls because of the pre-fab niche, and lightweight materials and smaller board sizes that are available. I really don't see any videos of people installing Kerdi board with an Oatey membrane. Are the two incompatible for some reason?