One of the biggest benefits when you paint a concrete garage floor is the look that it provides. Painting the floor can completely change the look of your concrete. Another benefit is that paint will help seal the floor and make it non-porous; otherwise, spilled liquids can seep into concrete and permanently stain it. It will not be as dusty as when you have regular concrete. It should be easier to clean once you coat it with paint. When you spill something on the concrete, you should be able to wipe it up with a rag. Paint is also one of the more economical choices for garage floor covering.