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Unread 09-09-2013, 09:32 PM   #5
Tiger Mountain Tile Inc
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Join Date: Feb 2011
Location: Issaquah, Washington
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Hi Pres,

Don't forget to tape the seams with 2" alkaline resistant mesh tape and mud them with thinset. If you only replace a narrow strip with cbu I think you could get away without blocking the top as long as the mesh tape is used. The bottom is a different story as it's harder to remove the flex in the board.

If you do as cx suggests and replace the entire section of wall board I might leave a 1" strip of sheetrock at the top, under the cabinet, so you can mesh tape to it. That way it eliminates a cold joint there.
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