National Building Code 2025: Guide to Engineered Wood Products for London, Ontario Construction
Sarah's Expert Insight
Senior Consultant at empcontracting.ca Inc.
"The NBC 2025 updates regarding engineered wood are a game-changer for London's mid-rise development, offering better fire-safety protocols and structural precision. At empcontracting.ca Inc. your construction contractor in London, Ontario, we leverage these advanced materials to deliver homes that are not only stronger but also significantly more energy-efficient for our local Southwestern Ontario climate."
Engineered Wood Products (EWP) represent the pinnacle of modern structural engineering, offering superior strength and consistency compared to traditional dimensional lumber. Under the National Building Code of Canada (NBC) 2025, these materials are subject to updated standards to ensure safety, sustainability, and durability in residential and commercial builds.
Key Engineered Wood Products in the 2025 NBC
The latest code revisions provide clear guidelines for the selection and installation of various EWP types, ensuring they meet the climatic demands of Southwestern Ontario.
Structural Composite Lumber (SCL)
This category includes Laminated Veneer Lumber (LVL) and Parallel Strand Lumber (PSL). The NBC 2025 emphasizes strict adherence to CSA O86 (Engineering Design in Wood), focusing on load-bearing capacities and moisture resistance for headers and beams.
Wood I-Joists and Floor Systems
I-joists are critical for achieving long spans in modern open-concept designs. The 2025 code mandates specific fire-protection measures for floor assemblies, particularly in residential settings, to enhance occupant safety during fire events.
Compliance and Performance Standards
As empcontracting.ca Inc. your construction contractor in London, Ontario, we prioritize compliance with the updated NBC standards to prevent structural failures and moisture-related degradation.
Fire-Resistance Ratings (FRR)
NBC 2025 introduces refined calculations for fire-resistance ratings of mass timber and engineered assemblies. This includes mandatory encapsulation or specific charring rates for structural elements to ensure they perform reliably under thermal stress.
Sustainability and Thermal Performance
Engineered wood is a carbon-sequestering material that aligns with Canada’s 2050 net-zero goals. Utilizing EWP helps builders meet the Tiered Energy Code requirements by allowing for more efficient wall and floor assemblies that reduce thermal bridging.