The Ontario Building Code | Material Standards Material Standards

(1) Except as otherwise specified in this Section, materials used for exterior waterproofing shall conform to,

(a) CAN/cgsb-37.2-M, "Emulsified asphalt, Mineral-Colloid Type, Unfilled, for Dampproofing and waterproofing and for Roof Coatings",

(b) CAN/cgsb-37.16-M, "Filled, Cutback asphalt for Dampproofing and waterproofing",

(c) CAN/CSA-A123.4, "asphalt for Constructing Built-Up Roof Coverings and waterproofing Systems", or

(d) cgsb 37-GP-56M, "Membrane, Modified, Bituminous, Prefabricated, and Reinforced for Roofing".