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Unread 02-02-2019, 06:24 PM   #1
hhcibtpaun
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Tile over Ceramic Tile

Folks,

I tried to search for tiling over tile and did not find much. I googled it and it seems like it is totally possible, but I like coming here to validate things .

Here is the situation, I have a condo at the beach and i just replaced the main floors with some LVT. I had thoughts of just laying the LVT over the bathroom floor then moving on. It dawned on me that I could maybe just tile over the existing tile.

The existing tile is in good shape, just a bit dated. It is over concrete. I do not want to get involved with chipping up the tie, so I was thinking just tile over it. From what I found from google, I can just knock the glaze off with a belt sander (maybe an orbital), then tile over???

Is this a reasonable approach? It is a small bathroom, maybe 25 square feet? It is small, so I think trying to chip everything out will be a pain, since everything is so tightly packed

thanks....Mike
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Unread 02-02-2019, 07:00 PM   #2
rmckee84
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If everything is sound yes, just remember your install is only as good as what you are installing over. If I were in your shoes I'd use some laticrete Prime-n-Bond then install the new tile with laticrete 254, 257, or multmax lite. This is not the only approach, there are other companies that will approve use of their products over an existing install, but this would be my approach.
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Unread 02-02-2019, 07:19 PM   #3
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Yep. Similar to Ryan, I’d use Laticrete 254 or Tec’s Superflex. Both have very good bonding abilities. For me, I’d rough up the existing tile surface, clean, and direct bond to that.

As far as sandpaper, look for silicon carbide belts or discs. It’s not common, but it’s available. Otherwise an angle grinder outfitted with a diamond cup will make very short work of roughing up the existing tile surface.

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Unread 02-02-2019, 07:29 PM   #4
hhcibtpaun
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Nice, thank guys. I have an angle grinder with a few of the diamond cups, so I can use those.

So, if I prime do I need to rough up, and if I rough up do I need to prime? Or do I need to do both, regardless?

Thanks....Mike
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Unread 02-02-2019, 07:39 PM   #5
Tool Guy - Kg
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If you rough it up, I’d direct bond to that.

While there’s nothing wrong with priming with a specialty product, I’m a fan of simplicity. So, I’d rough it up and use one of the high dollar mortars that will stick like a ton of bricks.

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Unread 02-02-2019, 07:51 PM   #6
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If you use prime-n-bond theres no need to grind, but either approach is fine and done correctly will work out.
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Unread 02-02-2019, 07:59 PM   #7
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Cool, thanks.

Mike
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Unread 02-02-2019, 09:08 PM   #8
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TEC multipurpose primer. You might want to look into it. http://www.tecspecialty.com/products...l#.XFZa4qSIb7o


I’d do a scuff surface and prime as recommended.
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Unread 02-03-2019, 01:23 PM   #9
hhcibtpaun
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Thanks...
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Unread 02-04-2019, 07:09 AM   #10
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I would be remiss if I didn't recommend the original tile-over-tile primer, MAPEI's ECO Prim Grip. It's available at your local Lowes and other places tile installation products are sold:

http://www.mapeihome.com/eco-prim-grip#categoryID=5
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Unread 02-04-2019, 07:19 PM   #11
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Don’t be remiss. Eco prim is a very good product.
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