On horizontal surfaces you can pour the epoxy stripper on the grout and work it in with a paintbrush.
Clean epoxy grout off ceramic tile.
Use moderate pressure to avoid damaging the tile.
Depending on how durable the glaze is on your tile there are some other methods for removing epoxy haze.
Rub the epoxy generously with the acetone covering the entire surface of the epoxy you want removed from the ceramic tile.
Apply epoxy stripper to the grout using a paintbrush.
On floors they will use a buffer with a wet slurry of sand with a detergent.
Normally this is not recommended for a glazed tiles or polished tiles as it can scratch the glaze.
Once you have done this use your spray bottle to apply bleach and warm water to your epoxy grout.
Take the water and sugar mixture and pour it over the grout that needs removed.
It is normally used on unglazed tiles.
Make sure to apply enough water that it can soak into the grout for an hour or two before you try to work any of the grout off.
In a bucket mix a gallon of hot water with a cup of granulated sugar mixing the two until the sugar dissolves in the water.
Coat the grout thoroughly.
Before you apply your mixture of bleach and water to your epoxy grout make sure your spray bottle is set to produce a stream not a mist.
In addition to cleaning epoxy residue if you encounter mold on your tile or grout this natural mold cleaner recipeis ideal for taking care of the black spots and sanitizing the area as well.