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Unread 05-21-2002, 04:35 PM   #1
rich mills
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Join Date: Feb 2002
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I am tiling a few small countertops in my new bathroom (12X24, 16X22, 8X22, 10x15). Is it necessary to use thinset to laminate the backerboard to the plywood on tops this small, or can I run a silicone bead between the layers and screw through the backerboard and plywood into the cabinets? I am using 3/4" ply and 1/2" backerboard for the substrate.
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Unread 05-21-2002, 05:03 PM   #2
John Bridge
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Hey Rich,

At six bucks for a fifty pound sack, why omit the thin set? You ain't gonna get anybody around here to buy into that.
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Unread 05-21-2002, 05:55 PM   #3
rich mills
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OK You got me. Thinset it is. Thanks
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Unread 05-24-2002, 10:30 AM   #4
Marcus
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Really?

I haven't read that thinset is needed underneath the backerboard. Screws or even roofing nails are sufficient.
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Unread 05-24-2002, 03:23 PM   #5
John Bridge
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Hi Marcus,

That may be the case, and you may be right, but the manufacturers seem to prefer it.

If you're in the business, join us over at the Professionals' Hangout. We'll argue with ya.
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Unread 05-24-2002, 07:43 PM   #6
Sonnie Layne
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See ya there, Marcus
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Unread 05-24-2002, 10:28 PM   #7
Bud Cline
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In this case thinset probably isn't necessary for a successful installation.

.......until someone stands on the countertop to paint the ceiling or change a light bulb in the fixture over the sink.
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