New walls - old ceiling

Replacing some gyproc in a bathroom and was wondering how to finish the inside corner where the new wallboard meets TEXTURED ceiling. A couple of posts on this site make reference to flat taping, and from what I can tell this would involve taping the new wallboard, but not the ceiling. How does this work? If you're not creating an inside corner with tape then why not just caulk it?

Can someone please explain the process to me so that I can use it to finish the inside corners of my bathroom? Trying to match the 30 year-old ceiling texture finish would be hellish!!

 

Flat taping is similar to taping a flat joint. The reason for flat taping is to close up the gap between the new wall and old drywall. The tape allows you to have a nice finished edge that can be caulked. It would be difficult to make the transition look nice with caulk alone.

 

Sure, but how do I do it? Does the tape fold up and over the drywall edge, do I fill the gap with jc and extend the tape over it until it makes contact with the ceiling, do I cut the tape down the seam and only use half? I'm looking for some specific directions, thanks!

 

Sorry ...... the tape is laid flat, just like you do when you are taping the joint between 2 pieces on the wall. Apply a thin layer of j/c to the top of the wall and press the tape in it with the top edge meeting the ceiling smoothing it off with your drywall knife. You use the tape just like it comes off of the roll.

If you google 'flat taping' I'm sure you can find a video showing someone doing it.

 

Thanks marker, that's just what I was looking for!