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Old 04-08-2012, 02:13 PM   #1
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Paper Faced Metal Corner Bead & Multiple Intersecting Corners


To comply with COUNTY code inspection requirements I have to build a fire resistant cover for a three-inch ABS soil drain exposed in the garage and the connection of a two-inch ABS sink drain penetrating the cover. Below is a picture of what I came up with. I decided to use paper faced metal corner bead, but after I started laying out some individual pieces it became obvious I was going to have a problem keeping all 9 pieces aligned and tight to the drywall when imbedded in wet mud. NOTE: I have never installed corner bead before.

I will need 9 individual pieces of corner bead that create two 90-degree three-way corners and 4 three-way off angle corners. All the information I see online for 90-degree three-way corners shows the 3 pieces of corner bead intersecting with 45-degree miters.

I was thinking of breaking the application of the corner bead up into three sections. First the top three horizontal pieces, then the bottom three horizontal pieces, then the middle three vertical pieces. I would eliminate the miter where the 90-degree three-way corner meets at the vertical pieces and use butted square ends like I will use at the three way off angle intersections. I would then clean the intersection where the vertical and horizontal corner bead meets before the mud dries so I would be able to apply the vertical pieces after the horizontal pieces are set and dry. Does this sound like a good plan? Will the 90-degree corner bead stay aligned at the intersections and tight to the drywall when set in wet mud?

Thanks for taking the time to read my post and consider my questions.



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Old 04-08-2012, 11:53 PM   #2
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Paper Faced Metal Corner Bead & Multiple Intersecting Corners


use a duofast stapler and put a few staples where the beads meet this will hold them in place until the mud dries. just try stapling 1 leg through the metal though .

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Old 04-09-2012, 09:53 PM   #3
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Paper Faced Metal Corner Bead & Multiple Intersecting Corners


Quote:
Originally Posted by oldrivers View Post
use a duofast stapler and put a few staples where the beads meet this will hold them in place until the mud dries. just try stapling 1 leg through the metal though .
Thanks for the reply. I don't have a stapler. I did try just setting the paper faced metal corner bead in the mud and it stayed in place without staples.
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