The first thing to understand about concrete basement wall cracks is that some are more serious than others. Cracks running vertically are common, and don't usually indicate structural damage. Horizontal cracks, on the other hand, are serious. They mean your wall is beginning to fail and needs immediate attention. Traditionally, that attention has come from basement repair professionals. "Don't try to fix horizontal cracks on your own" is the standard advice. My advice, as someone who's