grouting a poraclein tiles for a kitchen

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Old 11-12-09, 12:51 PM
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Question grouting a poraclein tiles for a kitchen

I grout the tiles but some of the grout by certain tile don't stay the grout break up in certain areas. I try the sealer that didn't work. What else can I do ? thanks
 
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Old 11-12-09, 08:21 PM
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Is this a floor, wall, counters" How and with what were they installed? Sounds like you have movement in the tiles. Grout won't crack unless the tiles are moving.

Jaz
 
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Old 11-12-09, 10:07 PM
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Question

they are on the floor. the tiles was Install with thin set thanks. if they are moving what can I do to stop them from moving? thanks
 
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Old 11-13-09, 05:13 AM
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Did you install them on a concrete backer underlayment? What size tile? How big is the grout line?
 
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Old 11-13-09, 03:06 PM
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I smell a tear out...hopefully I am wrong.

Like the other fellas have asked, how was this tile and grout installed.
 
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Old 11-13-09, 04:48 PM
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I do too, Mark. Think it is either on subflooring or on linoleum.
 
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Old 11-16-09, 10:52 AM
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the tile was install on plywood the tile size are 13x13 and the grout line size is about 3/4
 
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Old 11-16-09, 12:39 PM
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Still not enough info for the Pros....

How thick is the plywood...what is under the ply? What is the spacing and span of the support under the ply?

As they said...the grout shouldn't crack or pull away unless the floor is flexing or the grout was mixed and applied incorrectly.

This is not an issue that can be answered with 1 sentence replies...
 
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Old 11-16-09, 01:45 PM
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Tell us everything you know about the original installation of the tile.

What are the layers from the joist up? Plywood how many layers and thickness of each? Did you properly install (according to manufacturers instructions) a cement board underlayment over the plywood? What kind of thinset did you use, give exact names of products? What size trowel did you use? What kind of grout did you use, exact names?

What size are your joists, what is there on center spacing and what is their unsupported span.

Let's start by asking these basic questions so that we can get to the bottom of this.
 
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Old 11-16-09, 06:17 PM
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I also smell plywood soaking up moisture in the large grout lines. 3/4" is big. But we'll wait on the answers. You've got a good tag team on this, so give them the info they need and they will help all they can.
 
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Old 11-16-09, 08:09 PM
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We obviously don't have enough info to figure out what went wrong, but the plywood part and 3/4" grout line doesn't sound good.

Even if the floor was sturdy and the correct plywood and thin set used, grout will crack when it's that wide. I also fear this plywood is ether the subfloor or the luan the old flooring was glue to. Maybe not.

Jaz
 
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Old 11-17-09, 09:11 AM
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grout line size is about 3/4
Holy crap, I missed that.
 
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Old 11-17-09, 02:47 PM
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I thought you did. Or maybe I was missing a new product line out there.
 
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