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Unread 05-06-2016, 01:38 PM   #16
dhagin
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Versabond will work fine for both the walls & floor if over Redgard.
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"the road to hell is paved with osb, mastic, pre-mixed latex 'grout' or 'thinset', "
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Unread 05-06-2016, 05:07 PM   #17
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Thanks Dana. BTW, I'm on the Big Island!
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Unread 05-08-2016, 11:20 PM   #18
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Dana, I actually have Flexbond if it makes any difference.
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Unread 05-09-2016, 05:36 AM   #19
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The Flexbond will also work.
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Unread 05-09-2016, 11:34 AM   #20
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Thanks Davy.

Another question. I just finished doing my first mud pre-slope and I'm going to install my membrane. What should I plug the drain with to do the leakage test? Also, when I put the final 1 1/2" thick layer of mud on the membrane what is a good way to make sure I have a consistent thickness of material?

thanks.
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Unread 05-09-2016, 12:43 PM   #21
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You mark a level line around your perimeter and set your drain at one tile and and one bonding mortar thickness above the 1 1/2" thick level and screed your mud from the perimeter line to the point below the top of the drain. Frequently helpful to notch one of your screed sticks the amount of the tile and mortar thickness so you can use that to screed accurately to the top of the drain. Davy has a good photo of the notched stick, which hopefully he'll post.

My opinion; worth price charged.
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Unread 05-09-2016, 06:04 PM   #22
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Thanks CX.

Davy, I would like to see a pic of your screed stick and how you used it.

Thanks!
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Unread 05-09-2016, 10:01 PM   #23
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Davy's screed stick.

Name:  Notched Screed Stick Davy.jpg
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Size:  45.3 KB
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Unread 05-09-2016, 10:30 PM   #24
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Your island may be big, but we got more people! Oh darn.
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"the road to hell is paved with osb, mastic, pre-mixed latex 'grout' or 'thinset', "
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Unread 05-09-2016, 10:40 PM   #25
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Thanks CX.

I may have a problem! I just checked my pre slope that I set yesterday and there is a lot of loose sand on the surface. Is it supposed to be like that? I'm wondering if I made my mud too dry. I followed the directions I've seen in the liberry and went with a 5 to 1 ratio. Is it supposed to be like that and I just sweep off the extra sand or do I need to do something to correct it?
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Unread 05-09-2016, 10:50 PM   #26
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Vacuum away any loose sand. If it just on the surface or leaves a few small voids, then thinset will take care of it as you go. If, on the other hand, you can vacuum away larger areas of the mud, then you may be looking at a re-do. Let us know how you do and post photos if necessary.
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"the road to hell is paved with osb, mastic, pre-mixed latex 'grout' or 'thinset', "
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Unread 05-09-2016, 10:59 PM   #27
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Packing the mud down with a wood float before screeding it, then finishing with a steel trowel at the end usually takes care of that problem.
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Unread 05-10-2016, 08:53 PM   #28
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Okay, this is what I got. I vacuumed and dug out any loose concrete. I think I didn't do a good job of tamping down. So now I got some areas that I could dig up. The rest of the areas are solid except for a few areas. Is this salvageable? I'm sure hoping there is a way to fix this by adding on a layer or something as this is the pre-slope without the liner yet.

Help!
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Unread 05-10-2016, 09:22 PM   #29
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I think that's usually because of not sufficiently packing your mud before you screed it flat. On a pre-slope you can probably patch that with some deck mud with some thinset mortar as a bonding agent.

And having those plastic strips in there is not at all a good idea and I sincerely hope you'll eliminate such material in the final mud bed. In the pre-slope they may not be too harmful, but in the final mud bed you really don't want any plastic dividers to tell your mud and your tile where to crack.

My opinion; worth price charged.
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Unread 05-10-2016, 11:17 PM   #30
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Thanks CX for the quick response! I appreciate it. I will definitely not use the plastic in the final bed. I thought it would make the pre slope easier but now I know.

The whole floor has some small dents all around I think from when I drizzled the water on the mud. Shall I do a skim coat to make it smoother? I'm worrying about damaging the liner.

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