Generally scotch tape won't damage a ceiling if the card is removed soon. Wax will do damage.
I often did this trick for clients in my office and I followed the routine that appears in Scarne On Card Tricks - that is, I never took the card down and I found that no one ever looked up. So when I wanted to do the effect I would force a duplicate, have it shuffled back, control it, palm it out and toss the deck to the ceiling (BEING CAREFUL NOT TO LOOK UP AT THE CEILING UNTIL AFTER THE TOSS.)
(Unfortunately, you still have to bend to pick up the cards - but it's good excercise.)