I recently found a painter and got my popcorn ceiling removed. That ceiling is 70s concrete, so painter has to fill it with plaster instead of scraping popcorn texture off. After the job done, he skim coated it a few times to make it flat. However the plaster patch shrink afterwards and giving the ceiling a strange wrinkle texture. He came back to patch the ceiling a few times but the result is still not good. The method he used is just eyeballing the defect, applying some mud, and smoothing it with knife. That method is slow and leaving some light round spots on the ceiling. And frankly it didn't improve much...
He claim that plaster ceiling isn't going to be as flat as the ones backed with drywall. And he refused to skim coat anymore, saying it got three times already, and it is too much. I have a few photo, showing his patch jobs below.
May I know if this is what I got for plaster patched ceiling, or is it bad workmanship?
Also, if there is anything can we do to smooth it?