Any tips, tricks to extending a finished drywall wall? Making some
modifications to my home, I want to add 6 feet onto an existing wall
partition. It's a pretty simple job but just wanted to ask if there
are any best practices for when it comes to joining the new wall
drywall to the already plastered metal 90 degree corner.
Should you remove the corner first and then place the drywall flush to
the wall and plaster?
Or leave the corner? Just wondering if you leave the corner intact,
will there be a raised section or "bump" in the plaster where the new
drywall meets the finished wall?
Far better to knock the corner bead off. I'll normally take the end
drywall off and cut back the existing to half the end post for nailing
the new to get the same starting surface plane as well. Otherwise, as
you guessed, the finish work to smooth out the final wall is much more
of a pita to eliminate the shadow line from the hump...
Had a similar situation - needed to extend a wall across an
alcove a few inches, and then dog leg the new wall out into
the room - new counter to be butted to the new wall on one side,
closet on the other in the (now) deeper alcove.
If I hadn't ripped out the corner bead, it would have looked awful.
It also means that you get to fasten the extension wood-to-wood with the
old section of wall. Eg: build new section of wall framing, erect, and
then fasten the new framing directly to the old by driving screws
directly thru the adjacent (one old and one new) studs.
It'll be much more secure that way, rather than having 1/2" of drywall
in the middle. Which'll be much more likely to flex and crack the joint
(which'll now need at least another layer of tape or mesh over top of
the corner bead, making it more of a hump than the corner probably
Ripping out metal corner bead is a PITA, but it has to be done.
Age and Treachery will Triumph over Youth and Skill
Depending on the space available, you might overlap the existing butt end
wall with the new drywall. This requires a slight patch at the end of the
"butt" wall, but will avoid any ridges etc with the new run wall.
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