Hi everyone! In our basement is an very old, Terracotta-Quarry flooring. The flooring is over a 100 years old, and in an very bad condition, as there’s old glue/cement? all over them, And also an sort of black-like layer, which hardly comes off. I have tried Glue stripper, And an Acid-based cleaner, Brushed with an brush & an electric scrubber. they seem to become more clean. Sadly, when they dry, they still don’t have the beautiful orange color they used to have, they look white/grey/black? This photo, is the layer i’m talking about, the middle i have done with an brush, a scraper & a lot of scrubbing on this tile. which gaves slowly it’s orange color back. But the layer doesn’t come of easily. Who has THE solution to clean those, once-stunning tiles. to bring them back to their former glory?
