Oren wrote:
On Wed, 22 Aug 2012 08:17:40 -0400, "dadiOH"
wrote:

I recently had need to remove some Saltillo tile along the outside
edge of a concrete slab. The tile had been there for 15 years and
had been mortared in place with standard, grey thinset. Much - but
not all - of the thinset observed after popping the tiles was sugar
white. The white areas were not discernably different from the grey
in hardness or adhesion.

Any idea why the mortar turned white?

Might it Mastic instead of thinset?

No, it is thinset. I installed the tile oroiginally

--

dadiOH
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