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Unread 07-01-2008, 06:52 PM   #1
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Join Date: Jul 2005
Posts: 22
prepping shower for marble installation + finishing marble edges

hi all,

i've got my tub/shower stall ripped out to the studs. before i start my marble installation, i had a couple questions:

1) what is the recommend backing for marble? drywall over studs, then hardibacker/cementboard? does that differ for the ceiling?

2) as my tile does not have a matching bullnose piece available, what are my options for the edges of the shower wall? I assume whatever backer i end up putting over the drywall will raise the tiles some, plus the thinset...and you end up with a very raised unfinished look at the edges of the shower. how do you guys usually handle this when you install a marble/granite/travertine shower?

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Unread 07-01-2008, 07:09 PM   #2
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Location: LaConner, Washington
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Rusty, there really isn't any need to place backerboard over drywall. Inside the shower, place a moisture barrier down on the studs first, either 15# building felt or 4 mil + poly sheeting. Then 1/2" backerboard over that. Outside the shower area, transition to 1/2" drywall. As such the tile will be set flush with the painted surface.

Marble is a relatively soft material and easy to bullnose with hand tools and sand paper alone. Take a look at the Bullnose thread in the Liberry for tips on how to do that. Come back here with any questions of course.

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Unread 07-02-2008, 07:53 AM   #3
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thanks for the help, will definitely look into that bullnose thread

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