If vandalism were <i>that</i> much of a problem I'D MOVE!
IMO it's the painters problem and responsibility to mask off anything that shouldn't get painted. In most cases they do.
If they are painting a boiler room do they just spray right over the boiler, circulators, etc.? No. Should we have to stuff insulation in every can and box instead of the painter doing his job? You would never catch me cleaning paint off the inside of a hi-hat. I'd call the painter and let him do it.
