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Waterproofing shower walls that have sheetrock..

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Waterproofing shower walls that have sheetrock..

Old 05-20-2018, 08:11 AM
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Default Waterproofing shower walls that have sheetrock..

The condo board hired some less than scrupulous people to replace the drywall in our condo in Islamorada . I'm sure it was because of a liability thing with mold, but anyhow they took off my nice tile and drywall in 2nd bathroom with a tub shower. I told them to make sure they use green board or cement board when they put back up. Well they didn't. They used sheetrock instead of going 3 blocks down the road to pick up the right stuff. The painter put 3 coats of heavy gloss paint on it and it held up through the rental season. (as far as I can tell). Rental season was coming and I didn't have time to address it right away. I was undergoing surgery at the time.
Now the fix is something I don't want to spend a lot of money on like tearing it off and putting up the right stuff and tiling over like before. I read Red Guard waterproofing can't be painted with good results. Bathfitters wanted $2100 just for a 3 sided wall installed over what I have. Home depot has some wall surround for $255 (plus labor). Is there anything else you can think of, or does anyone know of a paintable waterproofing? Or last resort, does anyone know of a reasonable tile guy in middle Keys? Thanks.

Last edited by kennyboy; 05-20-2018 at 08:13 AM. Reason: spelling
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Old 05-20-2018, 08:21 AM
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So you currently just have drywall with gloss paint from the tub up? I've never heard of such a thing.

What do you mean red guard can't be painted with good results?

Aesthetic results or waterproofing results? Stuff paints on like a champ, though it's not smooth like paint. And it's a godawful color.

1/2" hardi, cloth taped seams, red guard, then tile is the way to go. Short of that, FRP like mentioned below is a good quick fix.
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Old 05-20-2018, 08:22 AM
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I would slap up some fiberglass stall walls and call it a day. Liquid nail and a few tubes of caulk.
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Old 05-20-2018, 08:35 AM
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Originally Posted by Lorne Greene View Post
I would slap up some fiberglass stall walls and call it a day. Liquid nail and a few tubes of caulk.
Agree.
Use the K.I.S.S. method.
Don't over think it.

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Old 05-20-2018, 08:36 AM
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Originally Posted by Double tyme View Post
So you currently just have drywall with gloss paint from the tub up? I've never heard of such a thing.

What do you mean red guard can't be painted with good results?

Aesthetic results or waterproofing results? Stuff paints on like a champ, though it's not smooth like paint. And it's a godawful color.

1/2" hardi, cloth taped seams, red guard, then tile is the way to go. Short of that, FRP like mentioned below is a good quick fix.
can't paint over Red Guard if I use that for waterproofing.
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Old 05-20-2018, 08:36 AM
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I've seen the plastic or molded wall/tub surrounds at Lowes. They appear to be a good solution. Don't know if that's the type of stall walls mentioned above.
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Old 05-20-2018, 08:45 AM
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I am in the tile business and build showers for a living. You can thinset Schluter Kerdi over the drywall and you will be alright. I would advise removing the bottom 6" of sheetrock and replacing with backboard first. https://www.schluter.com/schluter-us...-KERDI/p/KERDI

Personally, If I was doing this tub hop I would remove all of the sheetrock, replace with backerboard and then put the Kerdi over it.
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Old 05-20-2018, 09:00 AM
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Wire lathe and a cement scratch coat is the only thing I would put in my house
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Old 05-20-2018, 09:05 AM
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Can you post a pic? The guy sheetrocked the entire tub area and painted it? Find it very hard to believe but it’s possibke. My first call would be to the association president and have them fix this since they hired the incompetent contractor.

As David above said I would cut 6” or more out around the tub replace with cement board. Use Kerdi band and Kerri caulk and seal the band to the tub. Scuff sand all the paint and install Kerri and tile.
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Old 05-20-2018, 09:08 AM
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I'm having a hard time believing someone put bare drywall with paint in a shower stall. If it was mine I'd first be pissed as hell, second, tear it all out and do it right.
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Old 05-20-2018, 09:14 AM
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Originally Posted by bjm9818 View Post
Can you post a pic? The guy sheetrocked the entire tub area and painted it? Find it very hard to believe but itís possibke. My first call would be to the association president and have them fix this since they hired the incompetent contractor.

As David above said I would cut 6Ē or more out around the tub replace with cement board. Use Kerdi band and Kerri caulk and seal the band to the tub. Scuff sand all the paint and install Kerri and tile.
Unfortunately I don't have a pic, but yes there is a notification into the manager regarding replacement. I am just planning on step 2 if the knucklehead doesn't show up. The part that really pisses me off is that he said he would use greenboard or backerboard prior to him doing it. The supplier was literally 3 blocks away. Painter notified me a couple days before I had a 2 week tenant coming in. Wasn't time to fix it then and did not want to cancel the rental just days before their arrival.
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Old 05-20-2018, 11:34 AM
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Originally Posted by kennyboy View Post
Unfortunately I don't have a pic, but yes there is a notification into the manager regarding replacement. I am just planning on step 2 if the knucklehead doesn't show up. The part that really pisses me off is that he said he would use greenboard or backerboard prior to him doing it. The supplier was literally 3 blocks away. Painter notified me a couple days before I had a 2 week tenant coming in. Wasn't time to fix it then and did not want to cancel the rental just days before their arrival.
If it lasted the entire winter rental season without a leak or getting squishy Iím very impressed with the contractors work. Completely idiotic thing to do but at least he didnít cut corners doing the job.

i would seroiusky tear out the entire thing, cement or Hardi board and tile it. You are looking at nothing but problems later on if you try a 1/2 assed patch job.
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Old 05-20-2018, 12:07 PM
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Originally Posted by David31522 View Post
I am in the tile business and build showers for a living. You can thinset Schluter Kerdi over the drywall and you will be alright. I would advise removing the bottom 6" of sheetrock and replacing with backboard first. https://www.schluter.com/schluter-us...-KERDI/p/KERDI

Personally, If I was doing this tub hop I would remove all of the sheetrock, replace with backerboard and then put the Kerdi over it.


I agree with this, except I would just use kerdi board.
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Old 05-20-2018, 12:46 PM
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Scluter Kerdi. Excellent stuff. Put it right over the drywall and then put your tile up. You want a tile guy who is familiar with it to install, though.

Check it out.
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Old 05-20-2018, 02:32 PM
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Originally Posted by kennyboy View Post
can't paint over Red Guard if I use that for waterproofing.
Should tile over it.
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Old 05-21-2018, 08:00 PM
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Originally Posted by kennyboy View Post
The condo board hired some less than scrupulous people to replace the drywall in our condo in Islamorada . I'm sure it was because of a liability thing with mold, but anyhow they took off my nice tile and drywall in 2nd bathroom with a tub shower. I told them to make sure they use green board or cement board when they put back up. Well they didn't. They used sheetrock instead of going 3 blocks down the road to pick up the right stuff. The painter put 3 coats of heavy gloss paint on it and it held up through the rental season. (as far as I can tell). Rental season was coming and I didn't have time to address it right away. I was undergoing surgery at the time.
Now the fix is something I don't want to spend a lot of money on like tearing it off and putting up the right stuff and tiling over like before. I read Red Guard waterproofing can't be painted with good results. Bathfitters wanted $2100 just for a 3 sided wall installed over what I have. Home depot has some wall surround for $255 (plus labor). Is there anything else you can think of, or does anyone know of a paintable waterproofing? Or last resort, does anyone know of a reasonable tile guy in middle Keys? Thanks.
Thats not code. Just call the building inspector. Or threaten two and that guy should come back and do it right. Use tile backer board.
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Old 05-21-2018, 08:06 PM
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I think it's obscene how this could happen. Guy should be blacklisted from working in wet areas.
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Old 05-21-2018, 08:17 PM
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If there wasn’t a plastic moisture barrier of 3mils thick installed under the board regardless of what the top layer covering is then,
1) it’s code violation
2) It won’t matter what you install over it as it’s just a bandaid until the moisture penetrates......

I always installed a plastic barrier of 6 mils minimum, concrete board, seams fiberglass mesh taped, thin set and tile/stone.

Last edited by Riptied; 05-22-2018 at 02:56 AM. Reason: spelling
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Old 05-21-2018, 08:39 PM
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Are you sure it wasn't exterior drywall? Sometimes that isn't a color like purple or green. I also find it hard to believe that if it is just regular drywall it would soak up water like a sponge, purple board or green isn't acceptable as a shower wall either. You could install something like a Mincey Marble surround but will have to find somewhere to buy one. I would rip out the existing drywall, you have no idea what is going on behind there. Would be much better to address right now and be done with it.
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Old 05-22-2018, 05:07 AM
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Check out the stuff called Red Guard.............goes on like paint but creates a plastic type waterproof seal.
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