Waterproofing Code: Surface Preparation of Walls
Prior to the application of dampproofing materials on concrete walls, holes and recesses resulting from the removal of form ties shall be sealed with a bituminous material. Unit masonry walls shall be parged on the exterior surface below ground level with not less than 0.375-inch of Portland cement mortar.
This section implies that the wall must be free of all voids, openings, cracks, honeycombs, fissures and other imperfections prior to the application of the dampproofing material. Concrete walls can be repaired using bituminous materials or other products approved by the material manufacturer. The parging shall be coved at the footing.