OBC 2024 Door & Window Security Standards | empcontracting.ca Inc. London
Sarah's Expert Insight
OBC Compliance Specialist
"At empcontracting.ca Inc. your construction contractor in London, Ontario, we find that many builders overlook the 30mm screw penetration requirement for strikeplates, which is essential for true security. Whether we are working on a custom home in Oakville or a winterized cottage in Muskoka, ensuring that doors and windows are sealed correctly to the air barrier is the difference between a high-performing home and one with significant energy loss."
Understanding Forced Entry Resistance under Section 9.7.5.2
When securing a residential property, the Ontario Building Code (OBC) is specific about the hardware required to protect against forced entry. For any door requiring security, the code mandates a deadbolt lock with a 5-pin cylinder and a bolt throw of at least 25 mm. These specifications ensure that your home meets the highest safety standards in Ontario.
Hinges and Strikeplate Requirements
Proper fastening is critical for structural integrity. According to Article 9.7.5.2, hinges must be fastened to wood frames with screws that penetrate at least 30 mm into solid wood. Similarly, strikeplates for deadbolts must also reach a 30 mm penetration depth to ensure the jamb can resist spreading by force. At empcontracting.ca Inc. your construction contractor in London, Ontario, we ensure these hardware specifications are met with precision to guarantee your peace of mind.
Double Doors and Outward Swinging Hardware
For double doors, the inactive leaf must be equipped with heavy-duty bolts at both the top and bottom, providing at least 15 mm of engagement. If your doors swing outward, they must be designed with non-removable pins or hinges so they cannot be compromised from the exterior while closed.
Ground-Level Window Security (Section 9.7.5.3)
Any window located within 2 meters of the adjacent ground level must conform to the North American Fenestration Standard (NAFS) for forced entry resistance. This ensures that the most vulnerable entry points of a dwelling unit are reinforced against unauthorized access.
Professional Installation and Sealing (Section 9.7.6)
Compliance with CSA A440.4
The installation of all windows, doors, and skylights must conform to CSA A440.4. Key requirements include:
- Shims: Must be made of treated plywood for lasting support.
- Air Barriers: All units must be professionally sealed to the building’s air barrier system.
- Manufacturer Instructions: Field assembly must strictly follow manufactured guidelines to maintain warranty and performance.
Sealants and Flashing
To prevent water ingress and air leakage, sealants used in glazing must be chemically compatible with the sash components. Furthermore, flashing must be installed in accordance with Section 9.27 to protect the interface between walls, roofs, and openings from Ontario’s varying precipitation levels.
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.