Drywall Gap, issues or no?

Okay so I needed to redo the drywall after some water damage. The image you see is the wall to the ceiling with a ruler (image is a little blurry) but its about half inch gap. I'm looking for a solution or maybe its fine and the tape will cover it right up.

1) Redo the panel, its just one panel and its too big of a gap.
2) Clauk it or use something to stuff it, tape it, and mud it.
3) Use a corner bead, flip for the inside, screw it, tape it, and mud it.
4) Just tape it, it will be fine.
5) Mud the gaps with a few cured layers of mud, sand, tape, and mud.

I would do suggestion one, but than I would need to run down to Home Depot for more drywall and I drive a car... not a truck. Dont ask how I got 14 panels of drywall home on a car.(none broke) Open to suggestions, thanks.

 

If it was me, I would just throw some mud in there to fill as much of that gap up w/o over filling it, just flush if not less that flush w/ the wall. Then maybe buy a inside corner bead that had the paper on it. I saw it at lowes when I was buying a metal corner bead then mud that in and sand and paint. Maybe just the regular tap w/o the rigid part would work, but that is a big gap. I would say you could even try caulk but once again, not sure if it would perform better than mud.

I am not a pro but just an avid diy'er!! Good Luck

 

I'd prefill it with durabond [or any setting compound] and then use paper tape.

How did moisture cause the gap? Be sure and coat any water stains with a solvent based primer.

 

a 1/2" gap definitely has to be prefilled prior to taping & the durabond is a good way to go there. That's what is referred to "quickset mud" it comes in a powder form and you add water to make it a paste and use it for filling. It sets up very fast & very hard & can be purchased in 30 min, 45 min or 60 min varieties. You can also use regular drywall mud to fill the gap provided that you add it slowly and allow it to dry thoroughally before you try to tape that corner. hth