I'm looking to purchase a house constructed in 1939. Everything looks fine but there appears to be water damage in the basement. We've looked into whether to actually waterproof the basement (trench it, repair foundation, etc) or "bandaiding" the problem with a indoor waterproofing with a sump pump. So any info on those would be great to know but the real question I have is that apparently the foundation isn't Cement blocks but ceramic and could be extremely expensive to fix. What is this ceramic foundation? I can't find any information about this kind of foundation and the con's of having a House constructed as such.