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Mastic On Shower Surrounds

 
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Old 12-06-2014, 01:04 PM   #1
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Mastic On Shower Surrounds


I've been doing the tile in our house. Was recommended to use acrylpro for my shower surrounds by my general contractor brother in law. Now realizing that was a big mistake. Used it over dens shield with 3x6 subway tiles. No spacers, just stacked the tile right in the other so grout lines are very thin. Need to know what I can do at this point to reduce the risk of mold/future issues.

I used it to set soap dishes, shower shelves too. Help!!
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Old 12-06-2014, 01:13 PM   #2
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Re: Mastic On Shower Surrounds


That will not hold accessories, they will fall off.

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Old 12-06-2014, 01:21 PM   #3
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Re: Mastic On Shower Surrounds


I know. That's why I'm asking what to do
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Old 12-06-2014, 01:25 PM   #4
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Re: Mastic On Shower Surrounds


Posts such as yours are difficult for me to answer because I don't want to hurt your feelings. I suggest you Google Thinset vs Mastic, and then read the disadvantages of mastic.
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Old 12-06-2014, 01:59 PM   #5
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Re: Mastic On Shower Surrounds


Were the subway tiles self-spacing or is there actually no gap between the tiles. If there's no gap I'd just rip the thing out and redo it. If there is spacing then I'd remove and reinstall the shelves and soap dishes with thinset and then use either urethane or epoxy grout to help prevent any water ever getting back there. If you're not 100% sure that you even did a good job installing the mastic, I'd tear it out. Better now than a year from now.
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Old 12-06-2014, 02:08 PM   #6
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Re: Mastic On Shower Surrounds


Thanks Ethan b. I'll look into that grout
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Old 12-06-2014, 02:30 PM   #7
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Re: Mastic On Shower Surrounds


Then, make a note not to listen to your brother in law when it comes to construction advice
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Old 12-06-2014, 02:45 PM   #8
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Re: Mastic On Shower Surrounds


Jb4211- evidently
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Old 12-06-2014, 03:23 PM   #9
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Re: Mastic On Shower Surrounds


Matruski,

Chances are there's other errors in the construction of the shower. Just a guess. My main concern is how the base and the base/wall areas were built. Take the time to explain if you wanna.

If everything else was done right, I might remove the lower 2-3 tows of tiles, clean everything up and re-install using thinset. Mastic down there is not gonna last as long as it should regardless which grout you use.

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Old 12-06-2014, 05:18 PM   #10
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Re: Mastic On Shower Surrounds


So, when I've pulled tiles off, the stuff is rock hard and usually removes chunks if the dens shield. It seems to grab really well. Of course, we haven't used the showers yet so it's still dry. My plan as of now is to seal it as well as possible and basically wait for it to fail. Not seeing how I can do it now without just removing the whole sheet of dens shield. too much damage otherwise by just trying to remove the tiles
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Old 12-06-2014, 07:49 PM   #11
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Re: Mastic On Shower Surrounds


Well........OK. Usually a mastic like Acrylpro will stay soft for a long time, it thinks it's still in the can. When it gets damp in the future, it tends to re emulsify and lets loose. Also because it's organic, it's food for mold.

I thought you could remove some tiles by slicing them off, not pulling them off. No guarantee if anything would get damaged.

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Old 12-06-2014, 10:35 PM   #12
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Re: Mastic On Shower Surrounds


Thanks everyone. Lesson learned. Hopefully it won't be a terribly expensive one
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Old 12-06-2014, 10:43 PM   #13
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Re: Mastic On Shower Surrounds


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Originally Posted by Matruski View Post
Thanks everyone. Lesson learned. Hopefully it won't be a terribly expensive one
if you dont take the tile down now and let the mastic mold you will have an expensive repair, sooner than you would like...

i would take the tile down. if you dont take them all down at least the bottom sections as recommended by other and reset.
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Old 12-06-2014, 11:49 PM   #14
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Re: Mastic On Shower Surrounds


If you are taking some down, just do it all right. Pull and set with thinset.
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Old 12-07-2014, 12:25 AM   #15
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Re: Mastic On Shower Surrounds


I did four bathrooms. Trying to move in next week. Looks like I'll just need to tackle this one bathroom at a time in the coming months.

Industry needs to set some new standards if acrylpro is allowed to recommend it's use in surrounds under current standards
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Old 12-07-2014, 07:17 AM   #16
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Re: Mastic On Shower Surrounds


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Originally Posted by Matruski View Post
So, when I've pulled tiles off, the stuff is rock hard and usually removes chunks if the dens shield. It seems to grab really well. Of course, we haven't used the showers yet so it's still dry. My plan as of now is to seal it as well as possible and basically wait for it to fail. Not seeing how I can do it now without just removing the whole sheet of dens shield. too much damage otherwise by just trying to remove the tiles
Do what Ethan said. (good grout)

Get on with your life. (lesson learned)

Prepare for possible bathroom update down the road.

Hope for the best.....keep a close eye on it. (not like you have a ticking bomb buried in your shower)
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Old 12-07-2014, 07:25 AM   #17
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Re: Mastic On Shower Surrounds


My issue is with the fixtures. I use silicone on uncontaminated backer.
There's a lot of weight placed on those, even towel bars pulled as towels are removed.
Any stories of these falling off, or am I overconcerned?
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Old 12-10-2014, 12:18 PM   #18
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Re: Mastic On Shower Surrounds


I wouldn't use mastic in a shower surround, but I certainly don't think you have a ticking time bomb there as long as the mastic was not spread too think and allowed to fully dry before grouting.

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