Finishing outside corner


Old 11-09-02, 07:04 AM
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Join Date: Jun 2000
Location: Garrettsville, OH USA
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Finishing outside corner

Have built a small shelf for bathroom vanity light. 2 outside corners on shelf, covered with greenboard. Tried metal corner bead, but it doesn't fit well where three pieces come together on the actual outside corner. Does anyone make a molded fitting that covers intersection of 3 corner lines? Would flexible bead work better than screw in bead?

Any ideas on how to get a nice clean outside corner? This is much different that just trimming outside corner on doorway, as you never have 3 pieces of bead coming together.

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Old 11-09-02, 07:42 AM
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have you trimmed the three ends of the bead so the fit together? If not then you have to do that to get a flush fit.

Trim the tip of each end by snipping off an equilateral triangle off both nailstrips. This will leave the bead portion forming the point of an "arrow" on each of the three bead sections.

Then when you put them all together in place you'll see they all fit together with no overlap. Screw them in place and gently file or otherwise "shape" the three bead points that form your new corner. Then mud right over the whole thing.

If the sheetrock is correctly installed and the beadwork is cut just right, you'll get a perfect corner every time.

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