Basement Waterproofing Paint failure. Many water proofing paints simply do not work. If there is moisture coming through the concrete, then efflorescence will degrade the concrete and the paint will just fail then the concrete itself falls off. In order to properly seal the concrete a silicate sealer that goes into the wall is needed. It is very common for us to discover concrete dust at the base of the wall, this is where your degraded wall ends up, as dust on the floor. Its very hard for a paint to work when the wall itself is failing. we encounter this in many flooded basements that we work in.