2024 Ontario Building Code (OBC) Guide: Windows, Doors, and Safety Glazing Standards
Sarah's Expert Insight
OBC Compliance Specialist
"In high-end residential markets like London, Oakville, and Muskoka, the use of large-format glass is trending; however, meeting the 2024 safety glazing and marking requirements is non-negotiable for passing inspections. At empcontracting.ca Inc. your construction contractor in London, Ontario, we ensure that every transparent partition and shower enclosure is correctly rated and marked to protect both the homeowner and the builder from liability."
Safety Glazing Requirements for Dwelling Units and Public Areas
According to Section 9.7.2.2 of the 2024 Building Code Compendium, safety glazing or wired glass is mandatory for entrance doors in dwelling units and public spaces when the glass area exceeds 0.5 m² and extends to less than 900 mm from the bottom of the door. This regulation is a critical safety measure designed to prevent impact-related injuries in high-traffic residential and commercial zones.
Identification of Transparent Panels and Glass Doors
To prevent accidental collisions, the OBC mandates that transparent panels which could be mistaken for a means of egress must be protected by barriers or railings. Furthermore, glass doors accessible to the public must be clearly marked with hardware, bars, or permanent fixtures to ensure their position is readily apparent. For expert implementation of these safety features, trust empcontracting.ca Inc. your construction contractor in London, Ontario, to ensure your project remains fully compliant.
Shower and Bathtub Glazing Standards
Specific attention is given to bathroom safety. Glazing used for shower or bathtub enclosures must conform to Class A of CAN/CGSB-12.1, "Safety Glazing." This high standard ensures that glass used in wet, slippery environments provides maximum protection for occupants.
Entrance Door and Application Requirements
Section 9.7.1.1 applies to all windows, doors, and skylights that separate conditioned space from unconditioned space or the exterior. Every dwelling unit must have at least one entrance door, and main entrance doors are required to have either a door viewer, transparent glazing, or a sidelight to ensure occupant security and visibility.
Disclaimer: This content is generated from the Ontario Building Code for educational purposes. Always consult with a licensed professional engineer or your local building department before starting any construction project in London, Ontario.