Finishing a regular, 90-degree inside corner is simple enough: unless you need the extra protection of an inside corner bead or the rounded look of a Bullnose corner bead, paper tape ought to do the trick. It’s cheap, fast and gets the job done. But things get a bit trickier when it comes to off-angle inside corners, like the kinds you see running along cathedral or vaulted ceilings — here, paper tape just won’t cut it. Let’s dig into why, and what you should be using instead, in this ultimate guide to off-angle inside corners!
The Ultimate Guide to Off-Angle Inside Corners
Why not paper tape?
So much of drywall finishing is about creating noticeable lines — crisp lines, sharp lines, even rounded lines — to create a space that looks perfectly executed. On a sharp, 90-degree inside corner, the line there is already defined; all paper tape has to do is conform to it.
On an off-angle inside corner, you have to create the defined line for the space to look finished, and paper tape isn’t structured enough to accomplish that. Paper tape on a vaulted ceiling, say, will look wavy and formless. Check out this side-by-side comparison below between paper tape and Trim-Tex’s Fast Edge® Roll (more on that later) to see what we mean.
