The Ontario Building Code | Floor Waterproofing System

9.13.3.6. 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 mopped to the wall membrane to form a complete seal.

9.13.4. soil Gas Control