Sorry---rip it out and grind off the old thinset with a diamond cup---
Nothing will bond well enough to give you a safe solid floor on top of the slate---
Self leveling compound is soft and can not be used as a wear surface,
We have a few concrete experts here--Let's see if there is some product that I am not familiar with----
Nothing will bond well enough to give you a safe solid floor on top of the slate---
Self leveling compound is soft and can not be used as a wear surface,
We have a few concrete experts here--Let's see if there is some product that I am not familiar with----