I am remodeling my "manufactured home" to give it a more "constructed" look. As you know, the drywall panels are individually covered with a vinyl-type covering and then stapled to the wall. I have removed all the trim (used to cover uneven cutting) and the vinyl and have mudded and taped the joints, filled and mudded the gaps, etc. (I also added some drywall screws for extra security.) The final step I have before priming, texturing and painting, is a corner. I have installed corner bead and mudded it in. Do I need to tape it also? If so, do I only tape it on the sides, or do I also wrap the tape over the corner? How do I work the mud over the corner so the metal doesn't show through?
You do not have to do any thing but mud over it. If it is a paper/metal corner just apply it as you would wall tape, imbed it in a layer of mud and mud over it. If it is a metal corner nail it on to the corner and mud over it.