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Old 07-09-2012, 09:18 PM   #1
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Redgard for waterproofing

Greetings,

I am curious if anyone has thought about the potential for Redgard shower membrane for off label use in sealing interior seams during a restoration. We recently had our floor and shower tiled, and the contractor used the Redgard membrane. It is flexible, waterproof, and actually helps prevent tile cracking. The contractor said he had painted it over a piece of screen, and it held water once it dried.

I have not researched the specs on this product, and don't claim to be an engineer. It bonds to metal, plastic, and other substrates so this screams at me to be used in seam sealing from the inside.

Any opinions on this?


Before anyone asks...No, I am not in the process of renovating a vintage unit for our use. I already have an agreement to purchase on in California, and we are just waiting for it to be finished
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Old 07-09-2012, 09:34 PM   #2
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If you had the interior sheeting out and good access to the exterior shell, it seems like it would be great. Something maybe the factory could/should be doing.
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Old 07-10-2012, 06:09 AM   #3
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If you had the interior sheeting out and good access to the exterior shell, it seems like it would be great. Something maybe the factory could/should be doing.
My thoughts as well. This stuff is expensive, and that is why it likely wouldn't happen. I can be brushed, rolled, or sprayed on as well. I would just brush or roll it over seam laps.

Steve
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Old 07-10-2012, 09:36 AM   #4
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I used Redgard in my home when I was laying ceramic tile on a new concrete floor. Itís interesting stuff. My reason for using it is that it also acts as a minor release agent. I was concerned that cracking of the new concrete would transmit through to the tile and crack it as well. The idea was that when the concrete cracks, the Redgard would release the contact between the tile and the concrete and not move into the tile. When youíre done rolling it on, it does provide an obvious water resistant barrier.
Iíve seen some posts here discussing cracking of flooring over the seams in the plywood decking. Iíve often wondered if putting Redgard on the plywood would reduce that cracking. The water proofing would be a bonus. Iím in the process of installing new flooring in my trailer and I seriously considered using Redgard. However, Iím laying Marmoleum, and I canít find any literature that discusses the compatability of the two products. So Iím not going to risk it as the Marmoleum is very expensive and I donít want to screw it up.
The Redgard is a little pricy at about $45 per gallon, and a gallon covers about 110 square feet. In my mind thatís not prohibitively expensive. I just donít want to experiment on my nice pretty sheet of Marmoleum.
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