Do I need to add studs into existing wall ends when adding a partition wall?

Question

I am going to be starting a project to add a partition wall to our formal dining room to separate it into a pantry and an office. The location for the partition wall doesn't have any studs, but it does have ceiling joists running perpendicular to it including joists right on the edges of the walls to secure to.

My question is, is the ceiling joist and floor anchoring enough or will I need to install additional studs in the existing wall? And if so, what is the process to do this? I assume I would actually need to install several studs so the replacement drywall has something to screw on to?

Answer 1

Yes! you will want to add new studs (or blocking) to attach the new wall to and to hold the drywall at the wall joint for the old walls. You will be doing drywall work anyways, so repairing the wall where the new studs were added with new drywall will be straightforward. something like this:

If your alternative was to place the first 2x4 for the new wall against the old sheetrock and just run screws through it into the sheetrock to hold the wall, that would likely be fine until someone leaned heavily on the wall near the joint, flexing the new wall and damaging the sheet-rock where the screws went in.