Installed on the outside corners where two pieces of drywall meet, corner beads create a smooth, even seam and an attractive finish. Luckily for homeowners, installing corner beads and mudding them is one of the easier parts of the drywall process. When you install corner beads, apply light pressure on the bead itself toward the corner. This ensures that the strip registers evenly along both walls and runs in a straight line. Misalignment can make the bead twist up the corner, and your only remedy then is to rip it off and try again.
That will give you some backup material in case a strip gets bent or if a miter is miscut. Mudding beads is also relatively easy because you have the corner to guide one edge of your knife as you spread the compound. Avoid excessive pressure because that will curve the blade of your knife, resulting in an underfilled concave corner. There are two different techniques you can use to create corner beads: a metal corner bead for crisp corners or a bullnose bead for rounded corners.
Choose what works best for your space and follow our steps below to learn how to install corner beads on walls. At an outside corner, lap one sheet of drywall over the other and fasten it to the stud. Make sure the end of the lapped sheet doesn't extend past the face of the other wall.
If it does, rasp away the excess material. You don't have to achieve a perfect junction because the corner bead establishes the finished corner. It can be tricky to choose the right material for your corner bead.
To many traditionalists, vinyl is another word for plastic, and plastic can be cheap and brittle. But modern plastics technology produces high-performance materials that warrant consideration. For example, an abuse-resistant vinyl corner bead might be the right choice for high-traffic corners where impact is inevitable. If you've ever dented metal corner bead with a misplaced hammer blow during construction, you know that replacement is the only practical choice.
Composite corner beads are also impact-resistant and have the added benefit of conforming to corners that are substantially more or less than 90 degrees. If it isn't 90 degrees, a drywall pro calls it an "off angle. Baseboard molding will conceal any gap at that end. Lightly press on the corner of the bead, squaring the legs of the strip against the walls. Drive a few nails through the holes in the metal strip to establish its position, then nail through the metal for a more secure hold.
For superior corner bead and trim that resist cracking and install quickly, you can choose paper-faced bead and trim. United States Gypsum USG laminates paper to galvanized metal so that your drywall compound readily adheres.
The trim overcomes typical problems from building movement and settlement that can result in the trim pulling away and becoming visible.
With a large selection of corner beads and trims available, if you need help choosing which will fit your design and skill level best, please feel free to consult with our experienced, knowledgeable staff at DMS.
Or else, a big chunk of time would be spent trying to build up or hone down corners to a straight, sharp edge using cutting tools and joint compounds. While such an endeavor may work in the short run, the corners would damage easily with even minor impact and building settlement. The main categories include: Metal Corner Bead The most common and least expensive corner bead is galvanized metal.
Vinyl Corner Bead Vinyl corner bead is the plastic version of metal and is less prone to transport damage. Expansion Joints Because gypsum board, like just about everything else, expands and contracts with heat and humidity, installers should leave slight gaps — about a quarter inch — every 30 feet at most. Also, I only saw the plastic corner bead at HD. I've heard some people say to avoid it, but I haven't heard any reasons why. It seems pretty easy to install, although possibly not as strong as metal, it seems like it would provide a decent enough support over the drywall ends.
Please let me know your thoughts, opinions! Thanks, Jeff. Tags: attach , bead , corner. Re: What to use to attach corner bead Originally posted by carbonBased View Post. Last edited by rofl ; , AM. Comment Post Cancel. Black drywall nails. Use a small level or something straight, " long when installing if you are new to it, put it perpendicularly to the corner bead, one end on the corner bead "corner" and another on the wall, the corner bead end should be raised a bit to accomodate the nail heads.
Make sure that gap between the level surface and the wall is the same size on each side otherwise your corner will be twisted. Slide the level up and down to make sure no nail heads are catching. Make sure you put the paper tape and affix it with mud or bond at the ceiling inside corner on each side of your vertical corner first BEFORE you do your vertical corner. Use small trawl " and Sheetrock 90 or other bond, hold the trawl surface 45 degrees tilted and perfectly perpendicular to the corner bead.
Make 1" of your trawl protrude past the corner bead, and press it firmly but not too hard not to bend the trawl inwards so that both ends of the trawl slide on the corner bead lip and the drywall respectively.
Start your swipe at the ceiling and the floor and meet in between. You will have a small ridge left, just sand that off later. Finish the corner with mud in the same manner, 2 layers, 1 rough to fill the holes in bond, let it dry days, and 2nd "fine" to fill the pinholes in 1st layer of mud.
Voila, perfect corner.
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