Dampproofing and Waterproofing
1807.2.2.1, 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 or other approved methods or materials. Unit masonry walls
shall be parged on the exterior surface below ground level with not less than
0.375 inch (9.5 mm) of Portland cement mortar. The parging shall be coved at
Exception: Parging of unit masonry walls is not required where a material is
approved for direct application to the masonry.
Interpretation of the Code
This section states that the wall must be free of all voids, openings, cracks,
honeycombs, fissures and other imperfections prior to the application of the
Concrete walls can be repaired using bituminous materials or other products
approved by the material manufacturer.
Masonry walls must be parged below-grade level on the exterior surface using
not less than 0.375 inch (9.5 mm) of Portland cement. The only exception is if
the dampproofing material is approved for application directly to the masonry.
WaterproofingCode: Section 1807
February 6, 2009