9.13.3. Waterproofing

9.13.3. Waterproofing
9.13.3.1. Required Waterproofing
  1. Where hydrostatic pressure occurs, waterproofing is required for assemblies separating interior space from the ground to prevent the ingress of water into building assemblies and interior spaces.
  2. Waterproofing is required for roofs of underground structures to prevent the ingress of water into building assemblies and interior spaces.
9.13.3.2. Waterproofing Materials
  1. Materials installed to provide required waterproofing shall be
    1. compatible with adjoining materials, and
    2. resistant to mechanisms of deterioration that may reasonably be expected, given the nature, function and exposure of the materials.
  2. Materials used for exterior waterproofing shall conform to
    1. ASTM D 1227, "Emulsified Asphalt Used as a Protective Coating for Roofing," in which case, they shall be installed in accordance with Sentence 9.13.3.3.(3),
    2. ASTM D 3019, "Lap Cement Used with Asphalt Roll Roofing, Non-Fibered, Asbestos-Fibered, and Non-Asbestos-Fibered," where non-fibered and non-asbestos-fibered (Types I and III) asphalt roll roofing are permitted,
    3. ASTM D 4479/D 4479M, "Asphalt Roof Coatings - Asbestos-Free," in which case, they shall be installed in accordance with Sentence 9.13.3.3.(3) and with reinforcing material,
    4. ASTM D 4637/D 4637M, "EPDM Sheet Used In Single-Ply Roof Membrane,"
    5. ASTM D 4811/D 4811M, "Nonvulcanized (Uncured) Rubber Sheet Used as Roof Flashing,"
    6. ASTM D 6878/D 6878M, "Thermoplastic Polyolefin Based Sheet Roofing,"
    7. CGSB 37-GP-9Ma, "Primer, Asphalt, Unfilled, for Asphalt Roofing, Dampproofing and Waterproofing," where a primer is required,
    8. CAN/CGSB-37.50-M, "Hot-Applied, Rubberized Asphalt for Roofing and Waterproofing,"
    9. CAN/CGSB-37.54, "Polyvinyl Chloride Roofing and Waterproofing Membrane,"
    10. CGSB 37-GP-56M, "Membrane, Modified, Bituminous, Prefabricated, and Reinforced for Roofing,"
    11. CAN/CGSB-37.58-M, "Membrane, Elastomeric, Cold-Applied Liquid, for Non-Exposed Use in Roofing and Waterproofing,"
    12. CAN/CSA-A123.2, "Asphalt-Coated Roofing Sheets,"
    13. CAN/CSA-A123.4, "Asphalt for Constructing Built-Up Roof Coverings and Waterproofing Systems," in which case, they shall be installed with reinforcing material, or
    14. CSA A123.17, "Asphalt Glass Felt Used in Roofing and Waterproofing."
9.13.3.3. Preparation of Surface
  1. Surfaces to be waterproofed shall be prepared in accordance with the instructions of the waterproofing material manufacturer.
  2. Where the waterproofing material is to be applied on ICF walls, the instructions of the ICF wall manufacturer shall be followed.
  3. Unit masonry walls that are to be waterproofed shall be parged on exterior surfaces below ground level with not less than 6 mm of mortar conforming to Section 9.20. coved over the footing.
  4. Concrete walls that are to be waterproofed shall have all holes and recesses sealed with mortar or waterproofing material.
  5. Surfaces required to be waterproofed shall be clean and dry and free of ice, snow, frost, dust, dirt, oil, grease, cracks, projections and depressions, loose particles and debris that could be detrimental to the performance of the waterproofing material.
9.13.3.4. Application of Waterproofing Membranes
  1. Unless otherwise stated in this Subsection, waterproofing shall be installed in accordance with the manufacturer's instructions with regard to
    1. surface priming,
    2. conditions during application,
    3. the required number of layers of reinforcing fabric on foundation, footings, floors, walls and structural slabs,
    4. application quantity and rate, and
    5. curing times.
  2. Waterproofing shall be continuous across joints and at junctions between different building elements.
  3. The waterproofed surface shall be protected with a suitable material to minimize mechanical damage during backfilling.
  4. The area in which the waterproofing is to be carried out shall be kept free of water during the application and curing of the waterproofing system.
9.13.3.5. Floor Waterproofing System
  1. Basement floors-on-ground to be waterproofed shall have a system of membrane waterproofing provided between 2 layers of concrete, each of which shall be not less than 75 mm thick, with the floor membrane made continuous with the wall membrane to form a complete seal.