QUESTIONHi, I used a bleach substance on my black high gloss ceramic wall tiles they are now stained have a kind of grey line through them. Is there anything I can do to fix this. The barroom is fairly new and in perfect condition other than the stain . Really hoping something will remedy this . Thanks in advance
ANSWERANSWER - Bleach is high in alkalinity with a pH value of about 12. Strippers used to remove paint and sealers, so it can be very harsh.
High gloss black glazed ceramic tiles is known to be a relatively soft glaze that has propensity to scratch from abrasions and etch from being subjected to various chemicals.
Although I have not heard of bleach causing a glaze tile to stain, it is possible that chemically the soft glazed black tile was altered. If that is the case then, there isn't anything you can do about it.