I recently installed cement tile over cementous board in a tub alcove. When installing the cement boards I considered the mating of the cement board , with the drywall used to finish the rest of the bathroom walls. I decided that the drywall should lap over the edge of the cement board. Drywall has not been installed yet, but it’s readily apparent that the drywall edge will now be exposed on the end where it meets the tile/ cement board.
Is there a technique/ product I can employ to “finish” the edge of the drywall? Unfortunately, whatever is done, there will always be a reminder of my oversight.
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You can, of course, use any of several drywall edge products, but there is a trick that is sometimes used to put a clean, finished edge on drywall:
Cut the drywall about 4" too long
Score the back of the drywall at the point where you want to have the edge
"Snap" the drywall, bending towards its face. (Note that normally one would score the face and snap towards the back, but not in this case.)
Peel the 4" segment loose from the facing paper
Apply mud to the edge and back of the drywall and wrap the facing paper around the edge
This doesn't produce an incredibly "crisp" edge, and it's obviously dependent to a large degree on ones skill (and a bit of luck). YMMV.
Look on the web for Trimtex drywall beads.
you'll want "L" bead.
theres tear away L and one without a removable (after finishing) strip to keep mud off adjacent surfaces.
read the install instructions b/4 you hang the board, as you leave the cut edge a fuzz short to slip the finished edge of the bead in. This is plastic bead and can be caulked to your tile surface.
I usually use spray adhesive (Trimtex as well) to fasten the bead or you can staple to the board. I also use Durabond for the first coat, a setting type dry compound you mix.