Home>Discussions>INTERIORS>Molding & Carpentry>Cracking between two curved metal corner beads are butted up to each other
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bri_guy
Cracking between two curved metal corner beads are butted up to each other
bri_guy

In my bedroom i have drop down ceiling near the walls with recessed lighting. It has curved metal corner beads along the edges, but they are butted next to each other. Cracks are showing between the two metal corner beads that are butted together. I scrapped paint/mud off one of them and there is a 1/8 inch gap between the two. I taped it with fiberglass drywall tape and filled it with joint compound, but it just cracked in a day or so. How can I fix these cracks?

A. Spruce
Re: Cracking between two curved metal corner beads are butted up to each other
A. Spruce

Corner bead cracks are extremely commonplace. Due to expansion and contraction of the bead at a different rate than either the mud or the drywall, it cracks. The cure is to apply paper or mesh tape over the joint, thus bridging the gap and giving stability to the drywall compound.

It doesn't matter if you have two joints next to each other, as is your case, or a single corner bead, ALWAYS apply drywall tape to the edges of the bead if you want to prevent cracking.

bri_guy
Re: Cracking between two curved metal corner beads are butted up to each other
bri_guy

I forgot to mention that I actually used fiberglass drywall tape on it also.

A. Spruce
Re: Cracking between two curved metal corner beads are butted up to each other
A. Spruce

Odd that it would crack when taped. Either your methodology isn't quite right, or the joint is seeing a great deal of stress/movement.

Can you post a picture of the affected area, both a close up and a wide angle to see the surrounding areas as well. You will have to post the images to another ****** site or host, then link them here for us to see. Note: Facebook is not a suitable host, as only FB users can view FB content, and not all of us associate with FB.

Mastercarpentry
Re: Cracking between two curved metal corner beads are butted up to each other
Mastercarpentry
A. Spruce wrote:

the joint is seeing a great deal of stress/movement.

This is the problem and there is no good answer to it. If you stop the beads from moving, there will be movement between them and the walls so you will still have cracking, only somewhere else instead. Try to figure out and mitigate the movement first. When joining metal beads I was taught to crimp in a finish nail at the edge to keep the joint aligned, and with stucco beads we also used tie-wire to keep the beads tight together. Wood, plaster, plastic, metal, drywall, and mud all have different rates of expansion and contraction due to heat and humidity changes so there's only so much you can do. If you can't make the problem go away completely you can re-do the beads and move the bead joints to other less conspicuous places while tying them together like I do.

Sometimes all you can get is better, not best, without going through a whole lot of effort for little return. Where to stop the efforts is your call.

Phil

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