Basement Waterproofing - Efflourescence on Wet Basement Floor

The white staining you can see on the floor is actually efflourescence. This process occurs when water travels through concrete, dissolving the salts naturally present and bringing them to the surface. When the water evaporates, the salts are left behind. This is, in the early stages, largely a cosmetic nuisance. But over time the water travel can degrade the structure of the concrete.