TileProf says: |
Hi Pamela,
Not an easy one to clean, Acid causes damage, not really classed as a Stain, if the mark dispears when wet then there is hope for it to be resolved, try cleanin ghte Tile in question first remove all the old sealer and the re-seal with either Tile Doctor Colour Grow or Seal and Go, click on link below for more info on how to go about this problem.
Regards Tile Doctor
http://www.tiledoctor.co.uk/Slate.html |