Stone Acid Etchings

In my previous post I mentioned the necessity to avoid acid etching. Low ph solutions like cola, fruit juices and a multitude of household chemicals will cause acid etchings. We have to use a floor machine or an angle grinder to remove these etchings, a process that can be quite expensive. Shower walls for example are usually billed $500 per wall. The reason it is so expensive is that many times each square inch of every tile will need to be exposed to a grit progression (100,220,400,800) and then will be polished to achieve a like new finish.
These are a few pictures of etchings being repaired.
Breccia oniciata etched with a heavy acid. See streaks on the right. The tile on the left has been refinished.
The ceiling of this bathroom was sprayed with tilex cleaner. You can see the white etch marks on the tile.


Grout Cleaning