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Unread 03-20-2007, 08:31 PM   #1
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Join Date: Mar 2007
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bonding stick strength of Versa Bond and Kerdi

I've just completed the Kerdi application to the entire shower area using John's recommended Versa Bond thinset morter. My question is, how much bonding strength should one expect for this? I've noticed that it is quite possible (even after 48 hours) to separate the kerdi membrane from the drywall using a finger nail.. It can then be pulled on and separated fairly easily Is this okay? I'm worried about the kerdi holding up heavy slate tile. Is this normal bonding strength?
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Unread 03-20-2007, 08:56 PM   #2
Kitchen & Bath Remodeler Long Island
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Location: Long Island, NY
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Hey, quit pullin' at the Kerdi!

In a few days you wont be able to pul the Kerdi off without losing the fleece backing... Tile away!
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Unread 03-20-2007, 08:57 PM   #3
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Location: Astoria Or.
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No need to worry...Versa bond has plenty of bond. Although it's possible to peal Kerdi after a couple of days it will never expirience that sort of force applied to it. The tile load will tend to pull straight down, utilizing the bond of the entire sheet as a panel. If you have any doubts try and pull it straight across it's length or from the bottom. You can hardly move it this way when it's still wet.
Trask Bergerson
Bergerson Tile and Stone
Astoria, Oregon

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