From Wood to Steel
Why Cold-Formed Steel Is Shaping the Future of Canadian Homebuilding
1. A Turning Point for Canadian Homebuilding
For decades, the Canadian skyline of low-rise housing has been defined by one material: wood.
From Vancouver’s rainy suburbs to Toronto’s infill neighborhoods, wood-framed houses have been the default choice – familiar to builders, accepted by municipalities, and relatively affordable.
But the context has changed.
- Wildfire seasons are getting longer and more severe.
- Urban density is increasing.
- Building codes are evolving.
- Homeowners are more aware of safety, durability, and long-term value.
In this new reality, the question is no longer “Can we keep building with wood?”
It’s “Is wood still the smartest choice?”
At LEFF, we believe the future of Canadian homebuilding is cold-formed steel (CFS): light-gauge steel framing that is engineered, prefabricated, and installed with a level of precision that traditional wood simply can’t match.
2. Why Wood Dominated – And Where It Falls Short
Wood isn’t “bad.” It helped build much of Canada. It’s readily available, easy to work with, and familiar to trades. But it also brings a set of limitations that become harder to ignore as expectations rise.
2.1 Fire and Safety Risks
Wood is inherently combustible. With the growing number of urban and wildland-urban interface fires, this is no longer a theoretical risk – it’s a lived reality for many communities.
- Wood frames feed fire once it starts.
- Fire can spread quickly through concealed spaces in traditional framing.
- Even with fire-rated assemblies, the core structure remains vulnerable.
In contrast, steel is non-combustible. Cold-formed steel framing doesn’t ignite, doesn’t feed the fire, and maintains structural integrity for longer under high temperatures when designed properly with appropriate fire-rated assemblies. For homeowners and insurers alike, that’s a critical difference.