I'd like to remove the drywall from the two exterior walls of my corner bedroom, add a couple of electrical outlets while they're exposed, and put 3" fiberglass insulation batts between the studs. This house was built in West Texas in 1959, so it has NO wall insulation at this time. I don't want to use the blow-in or spray-in insulation. Several of the drywall nails have "popped" over the years, which is another reason to replace the existing drywall. The ceiling is insulated and the drywall overhead is OK, so I don't plan on messing with it.
If anyone has any tips for making the joint between the new wall drywall sheets and the existing ceiling drywall look good, please share them with me. I'm somewhat familiar with drywall taping since I put it in a large workshop I built a few years ago, but it was all NEW drywall.
Would it be beneficial to make an incision about 1/16" deep about 2" from the joint all along the ceiling sheets, and scrape out the old paper tape and joint compound from those sheets? This would provide a shallow channel to bed the new tape and it seems it would be easier to smooth out the compound.
I've always used the conventional paper tape; would the fiberglass mesh joint tape be better for this project?