You'd be wayy ahead to finish it before the sheets yellow and get
crappy looking,,light and humidity make sheetrock look aged
quickly,,papering over seams is'nt strong enough to stop cracking and
the joints would telgraph and show..
Dean

wrote:
I have a studio in my garage in which I lowered the ceiling. I've
finished all of the drywall on the walls. But I never got around to
doing the ceiling. No tape yet or anything. I was thinking.. could I
sort of wallpaper it with posters and not worry about finishing it?
Would it be as effective in covering the gaps and such?