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Old 01-17-2016, 01:36 PM   #16
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You can tile it right away if you have the experience and know how. Since you're asking, I'll assume you do not have the experience to pull the mud and install the tiles while it's still plastic.

So, it's best to wait a few days, however if you're careful and protect the floor while tiling, you could tile the next day if you had to. It's just that the mud will not be very strong and may break.

Do you know how to mix and instal deck mud?

Jaz
I've seen it done. The guy that took out my plywood/backerboard also did the mud for me (another 8 x 8 section). But I think he mixed a little too dry, there're random spots where there're loose sands on the surface. Majority of the area is hard, I tap it with a wood handle and it sounds solid and I can't drill in with a screw driver.

The bag says no more than 3.5 liter of water per 50 bag (I'm going with quickrete premix), so that's the guideline I'll be using. Mix well, make a sand ball with it and it shouldn't crumble. Pack it tight with a rubber trowel then go over with a steel trowel. Is this a sound procedure?
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Old 01-17-2016, 07:51 PM   #17
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Is this what you're planning to use? I don't think so. http://www.quikrete.com/PDFs/DATA_SH...Mix%201103.pdf Since the water ratio isn't right and the correct product doesn't come in #50 bag. What were you thinking of using? What's Quikrete premix?

This is what we use for deck mud, but we modify it a bit. The product is 3:1, for shower floors ideal is 4:1, standard mix is 5:1. So add enough sand to modify as noted. http://www.quikrete.com/PDFs/DATA_SH...Mix%201103.pdf Be sure to bond it to the slab with thinset.

There's no rubber trowel used in deck mud installation. And yes, it's supposed to be dry.

Jaz
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Old 01-17-2016, 10:58 PM   #18
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Is this what you're planning to use? I don't think so. http://www.quikrete.com/PDFs/DATA_SH...Mix%201103.pdf Since the water ratio isn't right and the correct product doesn't come in #50 bag. What were you thinking of using? What's Quikrete premix?

This is what we use for deck mud, but we modify it a bit. The product is 3:1, for shower floors ideal is 4:1, standard mix is 5:1. So add enough sand to modify as noted. http://www.quikrete.com/PDFs/DATA_SH...Mix%201103.pdf Be sure to bond it to the slab with thinset.

There's no rubber trowel used in deck mud installation. And yes, it's supposed to be dry.

Jaz
this is what I'm using. see attached. $4 something at Home Depot.

How do I bond the mud to the slab with thinset? Do I apply a thin coat of thinset, wait until is dry and hard, then install the mud?
Attached Thumbnails
wonderboard on plywood-deckmud.jpg  

Last edited by oldhouse49; 01-17-2016 at 11:21 PM.
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Old 01-18-2016, 12:19 AM   #19
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Ok good. Most stores do not stock that item, but since yours does, that's what you should use.

You had me worried when you called this "premix". This is not premixed, it's pre-blended.

For 1" thickness you have 2 choices if you follow Quikrete's directions. Either scarify the concrete and also use their Fortifier #8610 as directed, or Bond to the concrete with Adhesive #9902.

The "tile" industry does not generally do it this way. For a 1" fill you can spread thinset as you go and place the deck mud over the fresh thinset so it will all dry together. Do not let the thinset dry cuz there's no bond after it dries. Again, experience and the skill to do it is the key. Did you read their directions in the "Admixtures" paragraph?

You might be better off doing it as Quikrete suggests.

Jaz
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Old 01-18-2016, 12:48 AM   #20
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Ok good. Most stores do not stock that item, but since yours does, that's what you should use.

You had me worried when you called this "premix". This is not premixed, it's pre-blended.

For 1" thickness you have 2 choices if you follow Quikrete's directions. Either scarify the concrete and also use their Fortifier #8610 as directed, or Bond to the concrete with Adhesive #9902.

The "tile" industry does not generally do it this way. For a 1" fill you can spread thinset as you go and place the deck mud over the fresh thinset so it will all dry together. Do not let the thinset dry cuz there's no bond after it dries. Again, experience and the skill to do it is the key. Did you read their directions in the "Admixtures" paragraph?

You might be better off doing it as Quikrete suggests.

Jaz
Just looked into the 9902 bonding agent,
http://www.homedepot.com/p/Quikrete-...0201/100318465

Seems to be the best way to go and it's quite economic too. under $12/gal. which is more than plenty. I just roll it on then install the mud while it's still wet, right ?
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Old 01-18-2016, 01:02 AM   #21
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[quoteoldhouse]I just roll it on then install the mud while it's still wet, right ?[/quote]

That's not what the directions say. Go back and read it again.

Jaz
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Old 01-18-2016, 01:15 AM   #22
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[quoteoldhouse]I just roll it on then install the mud while it's still wet, right ?
That's not what the directions say. Go back and read it again.

Jaz[/QUOTE]

ok, got it. "let it dry before proceeding".
The description of the #9902 adhesive says
"3-hour working time", so I was under the impression that I should install the mud before it dries up in 3 hr. My bad.

Last edited by oldhouse49; 01-18-2016 at 01:18 AM.
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Old 01-18-2016, 07:29 PM   #23
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I've never used that product so I only know what their directions say. I didn't get to the 3 hour part, so follow what they say for the method you're doing.

Jaz
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