Frameless shower kit w/ tile walls

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tomhomeowner

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Here's the short version of the project since Valentines Day 08:
-gut the entire bathroom since the pilings have sank and that end of the house sank 4 inches
-jack up the floor, install more footers, fill w/ concrete
-install 3/4 plywood over 3/4 plywood to support tile floor
-install two more floor joists
-remove all rotten wood and install new wall studs as needed
-new insulation R11 wall insulation and greenboard on walls & ceiling w/ coat of Kilz
-set 12x12 ceramic on floor, grout & grout seal
-install pre-fab shower basin over lumps of thinset at drain & 3" from all corners
-this bath is on the NE side of the house; we're on a floodplain prone to flooding, moisture, bugs & fungus. Here on the coast, NE winds are cold, damp & rotten in the winter.

Here's the questions:
We're ready to put up the 12x12 ceramic tile we used on the
floor. We will have two walls w/ tile (corner) and the other two walls are made up of the glass walls in the frameless shower kit we purchased.
?? - For moisture barrier, will the coat of Kilz on the greenboard suffice since we're putting up Hardibacker under the tile? Do we need some other moisture barrier before we put up the Hardibacker?
?? - Can we use the ACRYLPRO (Custom Building Products) adhesive to attach the tile to the Hardibacker or will this cause us headache and misery later? (Floor tile installed w/ thinset-this product only on walls)
?? - Any other recommendations to avoid costly leaks, moldy & rotten wood and other icky 'failures' in tile shower installs?
 

Jadnashua

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Greenboard doesn't buy you anything...

If you now add cbu on top of the greenboard, it may stick out further than you want and make a mudcap tile required on the edges to trim that out. If you just used the cbu on the walls that would be tiled, it would come out even. If the greenboard overhangs the tiling lip into the shower, you're asking for problems...I'd take it out.

You want a vapor barrier behind the cbu that laps down over the tiling flange inside the pan. Don't use mastic in the shower, use thinset. Check out www.johnbridge.com for help on tiling things.
 

tomhomeowner

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Thanks! We did remove the board & attached the basin directly to the studs-
nixed the premixed stuff and we'll use the thinset on the walls!
We'll post pictures when completed (who knows how long that will take!)
 
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