Hello. It is an old staircase of a building from the 60's. The stairs are smeared with drops of various paints for an unknown number of years. In addition, the mosaic has become so black over the years and the water is difficult to dry on it, it stands like puddles. I'm looking for an idea for meaningful mosaic cleaning. I know how readable companies do it, they have polished and sealed my old mosaic, but it is expensive for public needs. Is there any chemistry to remove the uneven paints? It occurred to me and I tried with a little sandpaper, the surface drops are zeroed mechanically. However, it is time consuming ... I ask the moderators to publish the topic and thank everyone in advance.
1 indian_kama answered
Well, there is no third way, either you work or you pay to be done. We live in a two-storey house with shops below, so our stairs are like three floors, the cladding is mosaic, when my brother and I were 16-17 years old, my father gave us the task to rub 2 stairs a day, after school, in the evening we had an inspection. and pocket money was due only to the one who had done a good job, if it is not good you finish it and only then pocket money. With a car sander and sandpaper is not so difficult. However, if it is a staircase of a block with common parts is not so expensive, it comes to BGN 10 per square meter. I think that a family has about 5-6 square meters of stairs or about 50-60 BGN. But I think it will be really difficult to get the pensioners to give BGN 60 for the mosaic.