My building has been graffiti’ed in the past, appears to have been covered by a latex paint
I would prefer to remove the paint rather than continuing to cover it up. What is the most conducive/time effective option? Power wash? some sort of media blast?
Power washing or search dry ice blasting. Don t know if anyone local does it but it employs shooting small chips of dry ice which turn to gas state after impact.
I would def blast it. You can get paint strippers but it’s a pita, look up ready strip pro if you want to go that route. Roll it on, let it work overnight and powerwash it off.