Did Not Use Alkali Resistant Fiberglass Mesh - Drywall & Plaster - DIY Chatroom Home Improvement Forum
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Old 04-13-2014, 08:26 PM   #1
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did not use alkali resistant fiberglass mesh


The shower pan in my master bath started leaking and I am replacing it with a new shower pan because fiberglass was weak and flexing. So I took out a row of 12" cultured marble tile and replaced the shower pan. The drywall at the bottom of was bad so I went up another row to get to sound backing and I put in about 18" DensShield I did not realize that I needed to use alkali resistant mesh when I taped it and used mold resistant mesh with the latex modified thinset. ... So how bad off am I? What do I do to correct it, or should I just press on.

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Old 04-13-2014, 08:52 PM   #2
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did not use alkali resistant fiberglass mesh


Just press on---the mesh will have a shorter lift--but not necessary to redo it==

Did you add a waterproofing to the top of your repair?

That would be a good touch--Red Guard ?

As you have learned the hard way---drywall of any kind is a bad backer for tile in a wet area.

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Old 04-13-2014, 11:49 PM   #3
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did not use alkali resistant fiberglass mesh


two coats of either red guard or hydroban will do the trick and your ready to go
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Old 04-14-2014, 08:20 AM   #4
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did not use alkali resistant fiberglass mesh


You should be fine with the tape. The seam is filled with thin set and the tile should not allow much flex.
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Old 04-14-2014, 06:56 PM   #5
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did not use alkali resistant fiberglass mesh


I was a bit down and wondering if I should just tear it all out and start from scratch. Red Guard at Home Depot only comes in a $50.00 container, I suspect Hydro Ban might be more expensive. I guess it is worth it to cough up the $50.00 even though I don't need much for the small area.
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Old 04-16-2014, 10:21 AM   #6
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did not use alkali resistant fiberglass mesh


Either one is good. two coats and it is water proof. I like hydroban better works better in preventing cracks in the tile work as well Hydro ban from lati-crete is around 75 dollars per gallon and well worth it. think of it as do I want mold and rot and redo this again?

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