Electrical – Flush Mount Masonry Electrical Box

electricalmasonry

Building an outdoor kitchen out of 4" concrete block, it will be faced with natural stone veneer.

As I'm stacking the block, I'd like to add a few electric boxes, here's the 2-1/2" deep masonry box that's made for 4" block:
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I assume the front of the box is flush with the outside of the block. But what about when the ~1" of natural stone gets added to the block, it wont' be flush anymore??

I havent' been able to find any type of plaster or tile rings that extend masonry boxes.

Please help, I'm a newbie!!

thanks.

Best Answer

I think you position the box sufficiently proud of the cement blocks so that the box will be flush with the intended finished wall. Err slightly on the side of having the box inset in the finished wall and if necessary use a box extender(metal) or plastic. If you use an extender, you will have to use a ground pigtail to get a robust ground connection.