Flooring Tile - Shower Tile Job
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Jwichman
03-14-03, 08:38 PM
Need to tile a 36X36 corner shower stall. Bought a how to video and followed its directions. I removed the exist 1/2" MR drywall and replaced it with 1/2" "Wonderboard" backer board. Nothing on video discussed a moisture barrier.
Where I've transitioned the backer board back to MR drywall my joint is 1/8" off. Can I cover this when I mud and tape the joint? Should I treat this joint the same as a backerboard joint or a drywall joint or something else?
Also I have a neoangle shower pan (previously installed). I ran the backer board down to the top lip of the pan, then caulked with silicone and will then tile over the lip. This may leave about 3/4" of bottom tile unsupported. Is this ok?
Where I've transitioned the backer board back to MR drywall my joint is 1/8" off. Can I cover this when I mud and tape the joint? Should I treat this joint the same as a backerboard joint or a drywall joint or something else?
Also I have a neoangle shower pan (previously installed). I ran the backer board down to the top lip of the pan, then caulked with silicone and will then tile over the lip. This may leave about 3/4" of bottom tile unsupported. Is this ok?
Carpets Done Wright
03-15-03, 06:51 AM
I would have used a 6-mm poly barrier behind the CBU.
If the transition to sheetrock isn't in a wet area, which I hope it isn't, mud it as you set tile, by flat roweling first to fill the gap, like you were grouting the gap. Then flip the trowel around and use the notch side with more mortar to do your spread.
The CBU should have come down over the lip on the pan. A thick bead of silicone along the pan edge where the CBU will sit, before the CBU installation and let it ooze out as you attach the CBU panel.
The tile shouldn't sit tight against the pan. 1/8" - 1/4" is spec. Any more and more area for water intrusion.
The backer board should sit as far down as the tile to the pan.
Where is Dave Gobis when you need him.
The tile guru's over at JohnBridges.com would surely steer you in the right direction.
If the transition to sheetrock isn't in a wet area, which I hope it isn't, mud it as you set tile, by flat roweling first to fill the gap, like you were grouting the gap. Then flip the trowel around and use the notch side with more mortar to do your spread.
The CBU should have come down over the lip on the pan. A thick bead of silicone along the pan edge where the CBU will sit, before the CBU installation and let it ooze out as you attach the CBU panel.
The tile shouldn't sit tight against the pan. 1/8" - 1/4" is spec. Any more and more area for water intrusion.
The backer board should sit as far down as the tile to the pan.
Where is Dave Gobis when you need him.
The tile guru's over at JohnBridges.com would surely steer you in the right direction.
Jwichman
03-15-03, 07:23 AM
Since I already have the backer board up, is there anything I can do to salvage what I've already done? Also if I were to have run the backer board down over the lip of the shower pan, the backer board drywall transition would have missed by over 1/4". How should this be handled?
ee3
03-15-03, 11:31 AM
you can install a ansi 118.10 membrane over the cbu. ie. nobleseal ,9235,ultra set, ect. detail may be viewed at www.noblecombany.com to name one. search nobleseal ts