Removing "Grout Restorer" Pen

[UniverSeal]

Thinners gets of most things, and it does say on the grout restorer pens that you should not use solvent cleaners on them, confirming the fact, but on porcelain tiles I would guess that would etch the tiles? Cooking oil cleans off wax crayons a treat, but again you then have the problem of oil on grout...bit of a Pandora's box, so it really sounds like the customer would have to bite the bullet and pay for a regrout...

Try cleaning the porcelain with "Acetone or Xylene" these are both very effective solvent cleaners for very stubborn stains.

 

[billywiz]

Ring Lithofin, they generally have an answer for everything.

 

[Muse2k8]

Might do. Don't fancy messing and having to re tile at my own expense

 

[Rita grisius]

No idea, so will you be using a grout colourant....

Ring Lithofin, they generally have an answer for everything.