Partners,
Over past few months I tried to poultice out siliconized calking stains out of sandstone. I was encouraged seeing improvement after first 2 applications (poultice with MEK) however the third one (HG oil remover from scc) and forth one (MEK again) did not produce any significant improvement. Is there anything else I can do or is it safe to say that it is permanent and farther applications will not work?

Adam Bartos
BiO Tile & Grout Restoration
773-575-5515 (c)
847-438-0212 (o)
www.RestoreYourTiles.com