how would you remove a ghost......

[vance galliher]

........imagine. Got a call from my friend Bill Blumberg today. He painted some nice graphics with One Shot on the interior of two large windows several years ago. Some time after that, the owner had the windows tinted on the inside because of too much sunlight (south side of bldg.) She recently moved to a new location, and at previous landlords request, had to remove the tint film and blade off the painted graphics. All seemed well until she went outside and saw a distinct imagine of the graphics (looks like etched) still on the glass. She called Bill for help after she and husband tried numerous products and solutions to no avail. If she can’t get it off, she’ll have to pay $2500 for replacement panels Would cerium oxide with buffing pad work ? . Any other suggestions?.

[Pierre St. Marie]

Unfortunately only UV is going to equalize it, but in time it will fade away.

P

[Patrick Mackle]

Vance,
Having not seen this glass, several causes come to mind.

My guess on theirs is paint residue in the weathered surface.
Cerium would be far too fine and would not reach the paint until you polished the glass down to the paint.
I would suggest using a cleanser like Ajax or Comet and water.
Try a section using a white cotton tee shirt in a circular motion.
The pumice particles will roll around and act on each other as they work and grind the residue out of the glass.
I don't believe there is enough paint residue that you will see it appear on the cloth, but possibly. The real results will be seen either by viewing that section against what still exists, or by placing white paper from behind a looking close at the surface.
Instead of using water with the cleanser, you could also try a solvent. The solvent might wake up the paint enough for the pumice to act upon it.
If I think of anything more I'll add it later.
Pat

[Kent Smith]

I have had good luck using amonia and pumice or cleanser or Bon Ami. The amonia seems to be enough to lift the balance of the remaining resin, which is usually what you see, not color so much.