Waterproofing brick and mortar walls


  #1  
Old 09-01-21, 03:21 PM
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Waterproofing brick and mortar walls

Hi All,
I have a unique and interesting problem to discuss.
Unique , because it is about a Condo in India where the construction is of brick and mortar ... not drywall.

The problem is , the wall between Bathroom and bedroom is leaking. It has been repaired multiple times, but nothing worked.
After being a DIY Homeowner in US, I think I know what to do but have some questions.

I am thinking --
remove bathroom tiles ( shower return wall)
Remove bathroom mortar exposing brick
Put a layer of waterproof.... this is where I have question...

should I use something like Redgard or something like a Vinyl underlayment.
I have used vinyl underlayment when building my shower base ( in My US home) but I don't know IF it will work on wall and if I can use it on brick and mortar on it.

Difficult to get stuff like redgard in India, but I can take vinyl underlayment or Kerdi with me if that works

 
  #2  
Old 09-01-21, 04:20 PM
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So to clarify, the wall is brick and the shower tiles are installed directly onto these bricks?

If so then absolutely you need some type of waterproof membrane, the grout is not waterproof so water is wicking into the wall and into the bedroom.

Redguard, ditra, prova, really any type of water proof membrane would work.

Shower pan material, no, you need a scratch coat on top of that which would not work for walls!
 
  #3  
Old 09-01-21, 04:50 PM
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Thanks much. Yes, it is tiles on brick

My personal favorite is Redgard, but I doubt they will allow it in fligh ( not available in India), so probably ditra is the next best bet
 
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Old 09-01-21, 06:17 PM
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I see several places in India that carry Redgard products.
Redgard at bijon trading
 
  #5  
Old 09-01-21, 07:19 PM
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Thanks much pjmax ! Very helpful
 
 

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