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Old 12-07-2017, 05:49 PM   #1
stephenson
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Buying Redgard at HD ... and, got some input an installer!

So, am in checkout line at HD with a 3.5 gallon bucket of Redgard ...guy behind me says, "What are you going to use all that for?"

Turn around and start talking with him - he is VERY clear that he, as a tile installer, only uses it on the seams and corners. I think, hmmm, maybe he is doing that with poly behind the CBUs ... we talk some more. Nope, he says, "that cement board won't let any water get through."

I try to explain that my understanding is that cement board won't be damaged by moisture in most tiling situations, but will allow vapor/water to pass through.

Nope - not true he says - "just do the corners."

:-)
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Old 12-07-2017, 05:55 PM   #2
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Tell him we all said thanks for the future business.
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Old 12-07-2017, 06:19 PM   #3
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Awesome. The orange store is a fun place to see stuff like that. I recently saw two contractors loading some 20x20s along with a bucket of mastic into their work truck.
Good luck trying to educate the unwilling.
I will however start up a convo if I see a homeowner type with that kind of situation in his cart. They're usually pretty appreciative.


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Old 12-07-2017, 06:37 PM   #4
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See it all the time...I dont look for work at the big box stores but I do offer advice when I see a diy disaster, a lost person, or hear an employee giving terrible reccomendations.
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Old 12-07-2017, 09:05 PM   #5
Tool Guy - Kg
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That's a good example of something we all need to be aware of. We've all been guilty of repeating/teaching to others some misguided thought. You're likely to think the cement board is waterproof, the world is flat, or whatever if the first person you thought of as credible taught you such.

Learning is a life long process and it's not exactly comfortable to find out you were wrong about something. The only thing that is comfortable in a changing world is to plug your ears and repeat over and over to anyone who challenges your thoughts with the words, "I've been doing it this way for 20 years and NEVER had a problem".

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Old 12-07-2017, 09:41 PM   #6
Lou_MA
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Was at big box store a while back. A customer was buying a PVC liner and needed to seam two pieces together. He asked a store associate what to use to glue the seam and was told that contact cement would work. I don't typically chime in but did so in this case.
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Old 12-07-2017, 09:55 PM   #7
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The guy that built this shower was thinking the same thing about cement board. The studs near the jamb on the left were so swelled the door wouldn't close inside the jamb.
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Old 12-13-2017, 06:15 AM   #8
Canaris
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Hi guys long time lurker first post.

I also asked an installer if I really need RG.. to which he said if I use a modified polymer mortar like ultralight that will be my waterproofing..
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Old 12-13-2017, 08:41 AM   #9
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Quote:
I also asked an installer if I really need RG.. to which he said if I use a modified polymer mortar like ultralight that will be my waterproofing..
Why yes, of course. And pigs CAN fly if you train them right and feed them helium infused pellets.


You know, it's fairly easy to interpret nonsense from package labels and it's especially helpful to ignore the manufacturer's documentation and be sorta mindless to the overall picture. Then the world's your oyster, and you transcend into the realm of "expert".
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Old 12-13-2017, 04:00 PM   #10
jadnashua
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People confuse water resistant/waterproof and not being damaged by being wet...each of those terms describe a different characteristic, and are somewhat independent.

Lots of things are both water resistant and not damaged by being wetted, but that does not mean it is waterproof by any means.
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