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Old 12-28-2014, 01:47 PM   #1
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Stupid backer board


Had 2 cracked tiles near the floor of my shower. Probably letting water escape. My attempt to carefully remove the tiles resulted in crumbled concrete backer board. I think the backer was failed already, contributing to the cracked tiles. Does a fix exist? Or tear it out and start fresh?


Stupid backer board-image-1018559407.jpg
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Old 12-28-2014, 01:48 PM   #2
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Oops...should have posted in the bath remodeling section. My apologies.
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Old 12-28-2014, 03:58 PM   #3
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How thick is that backer?
It should have been 1/2 thick.
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Old 12-28-2014, 04:13 PM   #4
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Quote:
Originally Posted by jlmran View Post
Had 2 cracked tiles near the floor of my shower. Probably letting water escape. My attempt to carefully remove the tiles resulted in crumbled concrete backer board. I think the backer was failed already, contributing to the cracked tiles. Does a fix exist? Or tear it out and start fresh?


Attachment 100809
well even if you could repair it...it would be only that a repair....you answered your own question even though you were hoping for something eaiser I do that all the time lol...tearing it out and starting over would let you see the whole amount of damage behind the wall ...then you can fix right for good
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Old 12-28-2014, 04:15 PM   #5
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I doubt the backer board failed. What I see is an improper installation from the git-go.

Moisture barrier does not lap the pan liner allowing moisture to get to the studs and wall cavity. This is why the mold is there.

Wrong fasteners were used to secure the wall board, note the rust.

My guess is water got through the grout as it usually does, found its way to the studs, the studs got wet and expanded, the expanding studs caused the tile to crack.

You can expect more similar issues as time goes on.

Bad installation, installer error is the problem here.
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Old 12-28-2014, 04:42 PM   #6
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Quote:
Originally Posted by joecaption
How thick is that backer? It should have been 1/2 thick.
Yes - half inch, and laid over half-inch Drywall.
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Old 12-28-2014, 04:44 PM   #7
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Quote:
Originally Posted by Bud Cline
Moisture barrier does not lap the pan liner allowing moisture to get to the studs and wall cavity.
What is the moisture barrier in this scenario? The backer board?
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Old 12-28-2014, 05:00 PM   #8
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I don't think it would matter if the backer board was 1/4" its not like you're walking on it
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Old 12-28-2014, 05:29 PM   #9
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Quote:
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What is the moisture barrier in this scenario? The backer board?
Backer board is not a moisture barrier. I see something that appears to be behind the backer board, I just assumed that was a moisture barrier and it is short of lapping the pan liner as it should. If it is not a moisture barrier then apparently there is no moisture barrier and that would also be a mistake.
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Old 12-28-2014, 05:31 PM   #10
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Originally Posted by scottktmrider View Post
I don't think it would matter if the backer board was 1/4" its not like you're walking on it
It does in fact matter, drastically. One quarter inch cement backer board is never to be used on walls to support wall tile. One quarter inch backer board is intended for use on floors only.
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Old 12-28-2014, 05:34 PM   #11
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Quote:
Originally Posted by jlmran View Post
Yes - half inch, and laid over half-inch Drywall.
Should never be done like that without a moisture barrier. Tile walls are never waterproof, cement board is never waterproof. Drywall expands when it gets wet.

It's in all the books.
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Old 12-28-2014, 05:54 PM   #12
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Quote:
Originally Posted by Bud Cline
I see something that appears to be behind the backer board...
Well...that is the paper of the drywall. Darn.
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Old 12-28-2014, 10:54 PM   #13
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Quote:
Originally Posted by jlmran View Post
Well...that is the paper of the drywall. Darn.
You can expect more similar issues from now on.
Did you do the original installation?
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Old 12-29-2014, 11:40 AM   #14
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No I didn't install. Bought the house in 2012. House built in 1984, but I think this shower install happened later, based on the lumber behind the wall. I've been reading about the Schluter system. Folks (installers) seem to either really love it, or hate it. The hate seems to root from Schluter's customer service. Opinions?
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Old 12-29-2014, 03:24 PM   #15
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No I didn't install. Bought the house in 2012. House built in 1984, but I think this shower install happened later, based on the lumber behind the wall. I've been reading about the Schluter system. Folks (installers) seem to either really love it, or hate it. The hate seems to root from Schluter's customer service. Opinions?
I am one that loves the Schluter Systems approach, makes more sense than anything else. Makes shower construction and utility an all-together different animal. No reason to hate the system, it just makes too much sense and eliminates all of the issues you are experiencing as well as several others.

The only installers I have heard complain are the one's that think the package is too costly and won't spend the money to improve the quality of their finished product 500%. In my opinion the Schluter Systems concept don't cost - they pay.

Schluter isn't the only company doing such things and offering similar systems but they appear to have pioneered the ideas.

Look into it. You are headed for a total re-do sometime soon so check out the newer methods before you agree to anything with any contractor.
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