I've delt with this stuff for a long time, drywallers, painters, concrete guys they're all so careless cuz they know the window guy is going to have to deal with it. it's so frustrating dealing with dumb contractors that don't care about the next guy. I bid a ccu on a college once and it was accepted, afterwards painters came threw and didn't even tape anything off, over sprayed like crazy. horrible but it's always our problem, no one cares unless you start charging them for their mistakes. that's not ok, somone needs to be held accountable for that. That's not CCU, that's just a dumbass contractor.