slab flooring vs the conventional crawl space.

[Perry Ivy]

I'm interested in knowing what others think about this subject. I'm currently replacing one of my properties sub floor and it has me thinking about slab vs crawl. I have several of both and have only had issues with the conventional crawl space structure. I talked to my cousin about this and he said that he has had to use a jackhammer on several of his pluming customers slabs. I have never had this issue, but I'm curious about others experiences and any additional problems that could arise with a slab floor. Thanks