As the title suggests: should there be a paper tape in the joint between the ceiling and the wall? I've drywalled the walls and hopefully will put up drywall on the slanted ceiling during the weekend. I suspect there will be some gaps between the wall and the ceiling drywall. Is there any disadvantage to taping it other than that it will involve a lot more mudding?

Or how can I otherwise nicely fix gaps? The seam can't cover just any size of gaps. I haven't decided yet if there will be a crown molding or not. If I ask my wife, the answer is definitely NO!

Grateful for some support...
 
Spend time ensuring the fit of the boards is precise instead of plastering the joint and use latex sealant.
 
Yes, that might be the most sensible...
 
Draw a horizontal line on the wall with a chalk line, then angle the plaster more than the slope of the ceiling, measuring the same distance from the chalk line to the angled ceiling plasterboards. Voilà, you have a nice edge that only needs a tiny string of latex.
 
It was a bit of a hassle to get it done. There were indeed some gaps. But a bit of filler and joint compound, then sealant and paint over it, and it turned out perfect. So no, a paper tape in the joint between the ceiling and the wall would have just been unnecessarily difficult.
 
Won't it crack over time then??
I have sloped ceilings myself and it's at least a bit "flaky"...
I was thinking of putting a metal profile behind the transitions to get the right stiffness! You don't want to have to apply latex every spring and fall!
 
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