We just recently purchased this 1956 Ranch Home. After taking down the old paneling in part of the basement I find black tar on the inside of the walls. There is also bubbling cement that is easy to get off with a wire brush. The basement does have high humididty levels which we are fixing by installing a good humidifer. What I would like to know is I already tried most of the methods of removing the tar from spirit oil,acid to grinding away at it. I have come to the conclusion that I would just need to find a good a sealent for the expose cement and a good covering over the tar.
Could you recomend any paint or like paint that would cover the tar painted walls?