Repairing or replacing a concrete floor
If your floor has a few tight cracks and still sits flat, a repair or a new covering is usually the better use of your money. When it's sinking, heaving, broken into pieces or holding water, the trouble is usually the base. Patching the top won't fix that, so I'd tear it out and pour new. I'll tell you which one I see when I'm standing in the space, and I'd rather tell you a repair will do than sell you a floor you don't need.

