[Shop-talk] CSP 3 (ICRI) (moderately not OT)

[Scott Hall]

About to tile the bathroom.  House is on a slab.  Existing slab is not 
level.  I've purchased self-leveler that requires the slab be prepared 
to CSP 3 (ICRI).

Googling turns up a lot of instructions for other stuff that wants the 
same level of prep. to install...but no detail as to what CSP 3 (ICRI) 
actually is.

The slab had vinyl on it.  It's removed.  Any idea what I need to do to 
it now to get the leveler to stick?  I'll be doing the same thing to the 
garage bathroom after I'm done with this one.

Thanks.