Along the walls, I don't make it perfect but, Usually there will be floor prep. In todays built homes, the contracted tape and float crews along with the painters, make floor prep a hard, dusty chore.
I scrape down to a residue in the pores of the concrete, and encapsulate the entire slab with ARDEX SD-F, after I've filled the low areas, out of flatness specs of 3/16 inch in 10 feet., as I'm skim coating, I do fill the tackstrip pocks, especially across transition areas.
Glue is more expensive then floor patching compound.
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