Effective Jan. 10, 2024, our building inspectors are requiring inspections before concrete is poured in a slab for any building with an occupancy (ie: anything other than a garage). This is to ensure the correct installation of insulation, vapour barrier, bond break, and radon pipe (if required.)
Of key note is the requirement for a bond break - this is a material that prevents adhesion of the slab to any frost wall, as required by Code.
Check out this downloadable guide for more: basement wall details (10-01-24)