My foundation walls don’t leak but I have water coming up through cracks in my basement floor. After consulting with several other waterproofing contractors, they all want to dig up around the outside of my foundation and waterproof my walls and install drain pipe with gravel. Will this solve my particular problem?

The water that is coming up through your floor is most likely a result of hydrostatic pressure. This means that you have an abundance of water under your home. Doing the before mentioned work may not completely solve your problem under your home. I must restate that most contractors only warranty the area in which they waterproof. So, in your case, your walls maybe warrantied to an extent where your floor or slab would not.