You want to use the 3M safe release #2080 tape for this. I would wait at least 4 to 5 days to be safe.

Regardless of whether you are using tape or not -- always do the ceiling first and let it dry for at least 24 hours. You won't find many painters who will do that -- trying to fit too much into a day, but it's the best approach. I would wait several days before using the blue tape. Take it off right after painting and pull from close to the wall -- don't grab a long piece of tape and pull...you guessed it... paint comes off that way!

I recently painted an office. When I started I asked if they wanted the trim painted and they said no. Now all the walls are painted and they want the trim painted, of course. What's the best way to do it.