Wall backing for Onyx Shower base and panels

kyleknappMarch 31, 2014

I've ordered an Onyx shower base and wall panels to go in an existing 36" x 48" alcove. Before the plumber came to install the pluming, I tore out the drywall on all 3 walls, intending to replace it with Greenboard (recommended by the manufacturer) before the shower base arrives.

But the plumber says no, you have to install the shower base first, as it goes up against the studs, then you install the greenboard so it slightly overlaps the "lip" on the base.

So I'm confused, and Onyx's installation instructions give no clarity on this detail. Can anyone advise me?

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raehelen

Hi Kyle,

Yes, you install the base first. Contact Onyx for installation instructions (they should be available on their website). We have had two cultured marble bases made (similar to Onyx for your purposes). The first one looked something like the one you have posted, unfortunately, I seem to have lost all my pics from that year...? But here is one from the present reno. The base is made slightly differently, ie there is only a curb on the entrance side, and the other three sides are just thin walls that the cement board, and then the tile go over. The tile was laid to end nearly at the bottom of the pan.

Hope this helps.

    Bookmark   March 31, 2014 at 2:12PM
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kyleknapp

Thanks Raehelen, that does help,

I also contacted Onyx directly, and they referred me here: www.onyxcollection.com/shower-installation-tutorial.html

(I had watched their video tutorials and read their installation PDF, but somehow overlooked this page, which seems to be just what I was looking for.)

Thanks again

    Bookmark   March 31, 2014 at 2:44PM
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