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Old 03-02-2002, 11:59 AM   #4
Paul D.
Engineer/Grammarian - Austin
Join Date: Jan 2002
Location: Austin, Texas
Posts: 376
John and Chip

Ok, think I understand the description of how tiles were set years ago directly in a mortar bed without thinset adhesives.

I think I don't understand what a scratch coat is. Is it an initial layer that is roughed up in some what to give a surface to grab on to?

Is the only reason we are instructed to use a thinset layer when applying more mortar to a mortar surface that the base mortar is finished smooth?

Paul Despres, Austin
"Nothing to it, once you know how..."
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