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Old 08-05-2012, 12:31 PM   #1
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Questions about materials to use in a shower/tub area


I am using a contractor to renovate my bathroom (my house was built in 1937). He installed cement board in the tub/shower area for the walls and didn't use a vapor barrier. He said it isn't necessary and only agreed to use Redgard on the cement board after I insisted. He thinks it is overkill since we are installing an exhaust fan but from what I've read, if you don't use a vapor barrier, then you have to waterproof the walls before setting the tile. Am I right or did I just throw away $150 on this product?

He used green board on the ceiling over the tub. Is that okay? The ceiling will be tiled. The bathroom is on the second floor and the roof is right above it. Does the green board need to be coated with Redgard or some kind of waterproofing too? (I think there is insulation right above the shower and then the roof.)

Thanks for your advice!

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Old 08-05-2012, 01:26 PM   #2
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Questions about materials to use in a shower/tub area


No was vaper barrier needed.
The Red Gard was needed, grout and tile board are not waterproof.
Did he seal the seams with web tape and thin set before applying the Red Gard?
Green board is fine, but I still would have used tile board instead.


Last edited by joecaption; 08-05-2012 at 01:31 PM.
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Old 08-05-2012, 01:34 PM   #3
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Questions about materials to use in a shower/tub area


Thanks, that's what I thought but this is definitely not my area of expertise.
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Old 08-08-2012, 06:24 AM   #4
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Questions about materials to use in a shower/tub area


What are our materials options when it comes to remodeling the bathtub area of the bathroom? The tub will be replaced in the process. There is a window centered in the tub area. My bottom line is that I want to eliminate the possibility of mold. My husband is willing to expose the studs in the process of removing the 50 year old ceramic tile. We are open to any materials or kits that would give us this result.
Thank you for your time.
ET
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Old 08-08-2012, 10:27 AM   #5
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Questions about materials to use in a shower/tub area


Etohio, I did a lot of research when I re-tiled our shower. I wrote a summary that may help you.
Waterproofing tiled shower walls.

Your window may be an issue, especially if it is a wood trim window in an older house.
A pic would help.
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bathroom ceiling moisture, tub and shower, waterproof membrane


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