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Unread 09-06-2022, 09:14 PM   #1
jnthnlsn
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Porcelain slab countertops

Hi all, I am installing an office and we decided to go with Porcelain countertops. I realize this is not necessarily the place for countertops, but hoping for some thoughts as there is not much in the installation instructions out there. I thought it might be similar to a large format porcelain tile install. We are having them fabricated to size (24” by 92”) and planned on installing myself them over ¾ plywood on top of cabinets. I have thought to install uncoupling membrane and use a large format mortar, but have seen/ heard of others using epoxy or other adhesives that do not require the other prep. They sometimes install them over existing granite in remodels. They won’t carry much weight as a desk top compared to a floor application. Any thoughts are appreciated.
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Unread 09-07-2022, 06:22 AM   #2
John Bridge
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Hi Jonathan,

Sounds like a plan. Just make sure you have full coverage with the mortar, and press the panel down all over.
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Unread 09-08-2022, 05:19 AM   #3
Tile Money
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Porcelain Countertops

Hi,

Bostik makes an adhesive called Bosti-Set,

This adhesive is like glue and can be installed directly to a lot of things that thin-set has limitations.

What is your plan for the trim around your countertop tops?

Miters?

What thickness is your porcelain?
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Unread 09-08-2022, 10:58 AM   #4
Nicpaus
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Make sure the nose covers the plywood. We use 5/8 not 3/4. Post some pictures after installation.
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Unread 09-10-2022, 09:02 PM   #5
jnthnlsn
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Thanks all, much appreciated. We are having them add a 2” miter on the edge so the exposure shouldn’t be an issue. It ½ inch (12mm) slab.
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Unread 09-11-2022, 03:42 AM   #6
CaliGrown
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Nice choice with the Porcelain Slabs and a mitered edge at that!!! Lotsa options and possibilities

Ardex WA is what we used at a training event for GPTP, full spread and 100% contact/transfer is crucial

Please keep us posted with the progress and finish!
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