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dIYHell
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Discussion Starter #1
I am installing a cement backboard for a tile backsplash in my kitchen. There are several holes I need to cut for electrical outlets. Whats the best way to cut these. Should I measure and cut all the holes out of one continous piece or because this is just backerboard that will be tiled over I can cut smaller pieces to fit around this?
 

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Remodeling Contractor
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First you did not need backerboard. But cut the holes from a larger sheet, not pieces. Since these seams need to be flush. And remember that the boxes will now need box extensions, since the backerboard plus thinset plus tile exceeds code limit for a recessed box.
 

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Yes, you can glue the tile to the drywall. I don't think I've ever seen a backboard put up before.

I take that back, I did see someone add 3/8" plywood over the drywall once but cannot recall what their reasoning was behind attaching that particular backer.
 
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