First to remove old patches you can heat them up using a torch, this will soften the polyester fill and can be removed fairly easy. The removal of the crystallization usually be remove with a 220 diamond if very heavy crystallization was on the floor you may need to go down to a 120.
Filling the holes you can fill the hole that are not flush with the surface by using a polyester fill akemi or one of the filling products . you can over fill the holes and then hone off the excess. Using grout will not allow you to get any shine or luster on the floor. even using traver-fill will not polish.
Hole filling on a floor that require some shine or luster needs to be filled with a polyester. I like the Tenax travertine fill / buff this products matches the best to factory fills. If you need to add color to make is match.
Just bid the job high enough to do it right.
John E Freitag
The Stone & Tile School
From: Baird Standish [mailto:firstname.lastname@example.org]
Sent: Thursday, July 12, 2012 7:56 PM
To: Restoration and Maintenance
Subject: [sccpartners] Rescuing a marble floor polishing job with bad epoxy patches
I am doing tests for a project where I have to remedy a marble floor that 1. was over crysrtallized, 2. was not prepared at a low enough grit to remove pits and scratches and 3. contains many poorly colored epoxy patches, many of which level out below the surface of the marble creating ugly indentations. I came up with a good looking program honing the floor to 200 and then finishing off with an 800 grit honing powder. This reduces the contrast between the epoxy patches and the rest of the floor. But I still need to blend them in seamlessly. For the small ones I have thought about applying a faux marble treatment to the surface (I don't want to remove an endless number of patches-but have never done faux marble painting short of using pantone pens). The larger ones and sunk-in ones need to be removed. My idea is to mix in some marble dust from some old tiles with epoxy, apply them to overfill and then grind them down with the rest of the floor. Another idea might be to grout the holes like travertine so they are not as glossy. In any event, it is really difficult to get a smooth even patch that doesn't stand out. And it is really hard to get those other patches out. Any suggestions would be greatly appreciated. I attached a photo below where you can see what the issue is.
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From the desk of
Facility Specialists, LLC
15 West Highland Ave.
Philadelphia, PA 19118
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