Grout Stain Semi Polished

[Drew Hutchinson]

Hi Bob haven't at present it was cement away I used
The staining is very slight I have washed it few times and defiantly is fading but there still is a shadow like we're the grout was.
I have looked closely at the tile and lt appears to have very small cracks in the heights and I believe this is were the colour change has happened .
Customer not happy which he has every rite not to be but I feel can't except responsability for this I do believe it's the tile after 25 years think I would know!
Any help to get it cleaned appreciated as I said so faint you would believe it was just shade in tile.

 

[Lithofin BOB]

Hi drew, if our cement away , please watch vapour as hydocloric ,you and metal furnishings.
Intreaged to see a photo, might be worth testing any alkali , stripper ,cleaner on one tile if you have in the van .as this may break a polymer residue , poss this in those micro pores.
May just take another couple of washes, Have you tried with a white pad and brush?

 

[Drew Hutchinson]

Hi drew, if our cement away , please watch vapour as hydocloric ,you and metal furnishings.
Intreaged to see a photo, might be worth testing any alkali , stripper ,cleaner on one tile if you have in the van .as this may break a polymer residue , poss this in those micro pores.
May just take another couple of washes, Have you tried with a white pad and brush?

Hi Bob what would be he best Alkali stripper/cleaner

 

[Lithofin BOB]

We have lithofin intensive cleaner,or stripper would be wax off - I would go intensive if you use ours or a suitable light alkali from others