[Cob] Clay tiles over earthen floors

[Pavel Velikodvorsky]

Hello everyone!
I have a subfloor made of cob and want to lay tiles over it.
Does anyone have an experience on the matter?
The first thing I thought I will pour some concrete sublayer over existing
cobfloor, to leveling and straighten it. But then I've read Ziggi's (
theyearofmud.com) post on how he tiled his earthen floor using clay as
adhesive.  And I thought, maybe that is the way?
What do yoy guys think? Basically, will it stay in place? :) Also plan to
ask Ziggi.

Take care,
Pasha