Wall tiles in the shower sealed with silicon

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Old 03-28-20, 07:41 AM
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Wall tiles in the shower sealed with silicon

The shower wall tiles always get mold, more exactly the grout between the tiles. I may not know what chemicals to use but mold always is coming back. Now I am replacing the shower wall tiles and I wander why not to use silicon instead of grout. I understand the need of grout for floors but bath shower vertical walls are different. Strength is not an issue, also there is no mechanical impact to walls. Water only may hit the walls.
I have not seen mold on good, mold resistant silicon. This is just an idea, I need a professional opinion. What can go wrong?
 
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Old 03-28-20, 10:09 AM
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The main reason there likely was mold was because someone did not seal the grout.
No way would I use silicone!
#1, It would be a nightmare to apply.
#2, Any repairs or filling any gaps that show up over time would require you to remove all the old first.
 
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Old 03-28-20, 11:08 AM
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The mold probably goes back to how the shower was built. Tile applied directly to greenboard or drywall or something like that. It likely needs a complete gut job.

no, you dont silicone tile on. I guess someone out there might try. If you do, let us know how that turns out for you.
 
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Old 03-28-20, 12:24 PM
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I am not sure why you think you need strength on a floor and not on a wall.
If silicone was a good idea everyone would be doing it.

If you want less/no mold use large format tiles along with thin grout lines.
Less grout automatically means less possibility of mold.
Also be sure to seal the grout properly once you are done.


 
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Old 03-28-20, 02:10 PM
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Do you know a sealer grout that will be free of mold in 2 years? Is resealing working?
I am not a professional, I renovated a bath 10 years ago and I did a really good job (if you do not count the time spent)
 
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Old 03-30-20, 02:38 AM
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Sorry but I cannot be of much help here. Have not had tiles for about 10 years.
I used to have 2" X 2" tiles in the bathroom.
Sprayed it down with a fairly strong bleach solution a couple times a year and re-sealed it once a year.
The grout lines were fairly thick and eventually yellowed but I did get 30 years out of it.
 
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