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Corner bead choice bit me on a hotel lobby job last Tuesday
Had to pick between paper-faced metal bead and the old school galvanized stuff for a big curved opening. I went with the paper faced because it was faster, but the mud bubbled up right along the edge in two spots by the time we finished. My foreman just said, 'Shoulda wet it down more,' but the manufacturer says you shouldn't need to. Has anyone else seen this happen with paper faced bead on a tight radius, or was I just too heavy with the first coat?
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aaron_gonzalez1mo ago
The trick with tight radius paper bead is that the paper holds moisture differently on the inside of the curve versus the outside, so you get uneven drying even if you wet it the same all around. Your foreman might not be wrong about wetting it more, but the real fix is to pre-bend the bead past the radius you need before you mud it in place. That way the paper isn't fighting the curve while the mud sets, and you won't get those bubbles popping up along the edge.
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