The Ontario Building Code | Screws
9.29.5.7. Screws
(1) Screws for fastening gypsum board to wood supports shall conform to ASTM C1002, "Steel Self-Piercing Tapping Screws for the application of Gypsum panel Products or Metal plaster Bases to wood studs or Steel studs".
In Plain Language
This clause requires screws used to fasten gypsum board to wood framing to meet the ASTM C1002 standard for self-piercing tapping screws designed for that purpose.
This is a plain-language summary of the 2012/2017 Ontario Building Code text above, for general understanding only and not a substitute for the Code. Always confirm current requirements against the 2024 edition (O.Reg. 163/24) or a qualified professional before construction.