Canadian Steel Reuse Data: What Studies Show
Canada’s reported 90% structural steel recovery rate is not a reuse rate. Before comparing steel building quotes, I’d ask for product-specific EPDs, a recycled-content statement and a maintenance plan – not rely on a recycling claim.
Here’s how I’d read the data:
- Recovery, recycling and reuse are different. Collected steel may be melted down rather than used again as beams or panels.
- Recycled content varies. Reported figures are typically 95% or more for EAF steel and about 25% for BOF steel – not guarantees for your order.
- Building lifespan needs a separate check. Demolition surveys cannot predict how long a new steel building will last. Maintenance, corrosion protection and changes in use matter.
- Compare the same job over the same period. Include production, construction, energy use, transport, maintenance and end-of-life stages. Keep potential future recovery credits separate.
My takeaway: <u>check the supplied product, not just the industry average</u>. Use mill test reports to confirm grade and traceability, and treat whole-life impact as a project-level question – not a score based on recycled content alone.
Canadian Steel Data: Recovery vs. Recycled Content vs. Reuse
2. Findings on Steel Recovery, Recycled Content and Reuse
Reported Recovery, Recycled Content and Reuse Findings
Canadian industry summaries report a 90% recovery rate for structural steel from Canadian construction sites. They also report separate recycled-content figures for new steel products. Buyers need to distinguish recycled content from direct reuse: recycling steel and reusing an existing component are different outcomes.
| Evidence source | Material or product covered | Reported finding | Geographic scope | Important limitation |
|---|---|---|---|---|
| Industry summary | Structural steel from Canadian construction sites | 90% recovery rate | Canada | Recovery is not direct reuse. |
| CSSBI / Industry-wide EPD | EAF steel products | Typically 95% or more recycled scrap | Canada | Applies to this production route, not all steel. |
| CSSBI / Industry-wide EPD | BOF steel products | Approximately 25% recycled input | Canada | Not a guaranteed purchase minimum. |
| NRCan / Research study | Directly reused structural steel | 29–33% GHG emission reduction | Canada | Production stage only, not the whole life cycle. |
Reduced fabrication waste measures something else. Efficient cutting does not tell buyers how much steel is collected after demolition or how many components go into another building, which impacts steel building prices.
Why Recycled Content Differs by Product
Recycled content depends mainly on how steel is made. EAF steel products typically contain 95% or more recycled scrap, while BOF products contain approximately 25% recycled input.
Request a product-specific environmental product declaration (EPD) and a manufacturer’s recycled-content statement. Check the dates and which products each document covers. Use mill test reports (MTRs) to confirm grade and properties – not recycled content.
Requirements for Reusing Steel Components
A scrap recovery receipt alone is not enough to support the reuse of salvaged beams, frames and panels. Measure their dimensions, inspect them for corrosion and damage, and check for contamination. Match heat numbers to MTRs and drawings. An engineer must assess material properties, connections, load capacity and code compliance, including CSA G40.21 for structural shapes and plates.
Plan dismantling, storage and transport early to keep recoverable members usable. Connections must allow removal without structural damage. Components with uncertain properties or unsuitable connections may not qualify for another structural use, even when the steel can still be recycled. Service-life evidence is the next part of that comparison.
sbb-itb-747b4cf
3. Steel Service Life and Demolition Studies
Recovery data does not tell buyers how long steel buildings stay in use. Steel durability is not the same as building lifespan. Service life also depends on how a building is used, maintained and affected by redevelopment.
The 227-Building Demolition Survey
The 227-building demolition survey looks only at buildings that have been removed. It cannot predict how long a new steel building will last or represent the full building stock.
For context, about 40% of Canadian commercial and institutional buildings are more than 50 years old. That figure covers buildings made from various materials, not just steel.
Maintenance, Building Changes and Demolition
Corrosion protection, detailing, construction quality, climate and maintenance all affect how long a building can remain in service. In Canada, pay attention to road salt, moisture and details that protect exposed steel. Ask how the proposed protection and maintenance plan handles these conditions. A general claim about durability is not enough.
For buyers, the question is not just how long steel lasts. It is how long the building stays useful.
Buildings can leave service before their structures fail. A change in ownership, redevelopment or planning decisions can end their use for non-structural reasons.
Before buying a steel building, ask whether it can accommodate another use, such as storage buildings, and budget for building envelope and mechanical system renewal. Service life and the ability to change uses affect whole-life value when comparing building materials. Life-cycle costing must account for maintenance, replacement and disposal – not just the purchase price.
4. Comparing Building Materials on the Same Basis
Once you understand recovery and service-life data, the next step is to compare products on the same basis.
Compare function, site and assessment period – not material weight. Each option must meet the same structural, thermal and fire requirements. Assess recycled content, recovery and service life against that shared building function and life-cycle scope.
| Comparison basis | Consistent requirement | Why it matters |
|---|---|---|
| Building function | Same loads, spans, fire ratings and thermal resistance | A lower-impact product may need more material to do the same job. |
| Durability and Longevity | Comparison of steel barns versus wood alternatives | Steel often offers a longer service life with lower maintenance. |
| Study period | One stated period, such as 60 years, with consistent replacement assumptions | An assessment period is not a lifespan prediction. |
| Location | Same climate, site conditions and delivery destination | Regional electricity, transport and exposure affect results. |
| Life-cycle boundaries | Same production, construction, use and end-of-life stages, with Module D reported separately | Avoids missing impacts or double-counting future recovery benefits. |
EPD Units, Scope and Life-Cycle Stages
An EPD reports life-cycle results for specific impact categories and stages. CISC and CSSBI resources include EPDs for structural steel, cold-formed framing, steel deck, and roll-formed roofing and wall panels. For other components, check that the declaration covers the actual product. A general steel EPD is not enough.
| EPD check | Requirement for comparison | Limitation |
|---|---|---|
| Functional unit and performance | Use the same unit and match structural and thermal performance. | Equal mass does not mean equal performance. |
| Geography | Check manufacturing location and electricity assumptions. | Global averages may not represent the supplied steel. |
| Product category rules | Check PCR versions and whether calculation methods are compatible. | Different rules can prevent direct comparison. |
| Dates | Check validity and the underlying production-data period. | A current declaration may still describe older production data. |
| Life-cycle stages | Compare the same modules for both options and keep Module D separate when reported. | Manufacturing-only results cannot be compared with whole-life results. |
Module D reports potential benefits beyond the system boundary, such as future recycling or reuse. Keep it separate from A–C totals.
Buyer Checklist for Material Comparisons
An EPD review is only part of the check. Buyers also need project-level documents to verify what will actually be supplied.
Ask providers for the same documentation package: current EPDs, mill test reports (MTRs) for heat numbers and grades, and a separate recycled-content statement. Use MTRs for traceability only. Before accepting a comparison, check for gaps using the table below.
| Metric | What to request | Why it matters | Common interpretation risk |
|---|---|---|---|
| Initial impacts | A1–A3 results plus A4 transport and A5 construction | Accounts for impacts through installation | Calling manufacturing-only data the full upfront impact |
| Recycled content | Verified percentage and production route (EAF/BOF) | Documents material inputs | Treating recycled content as a carbon score |
| Durability | Maintenance schedules and service-life data | Affects how often a material must be replaced | Assuming no future work is needed |
| Transport | Distances in km, transport modes and delivery stages | Reflects the actual supply route | Counting only the final delivery |
| Recovery routes | Deconstruction assumptions, destinations and Module D results | Makes end-of-life scenarios explicit | Treating recyclability as confirmed recovery |
| Whole-building LCA | Results, quantities and assumptions from a whole-building LCA | Accounts for interactions across assemblies | Selecting materials from isolated EPD figures |
Higher recycled content does not automatically lower whole-life impact. It is one documented input, not a substitute for a whole-life assessment. Energy, fabrication, transport, material quantities and replacement needs also affect the result.
5. Conclusion: Using the Data Before You Buy
After comparing EPDs, service life and recovery routes, the buying decision comes down to traceable documents. Assess recovery, recycled content and service life separately. Then check how coatings, moisture control, maintenance and future changes in use affect the proposed building.
Documents to Request From Providers
For every steel building kit quote, ask for records that verify what the provider will supply:
- Product-specific EPDs, MTRs and a recycled-content statement.
- Corrosion-protection details, insulation specifications, maintenance requirements and disassembly or recovery information.
Ask how the coating and maintenance plan account for local moisture and road salt exposure. Where possible, request bills of lading with heat numbers and member tags so you can match the delivered steel to its MTRs and EPDs.
Canadian Buildings is an educational resource that helps Canadians find pricing, information and a provider for customizable Canadian-made steel building kits.
Data Gaps and Final Takeaways
Without these records, the numbers remain generic. Documentation gaps and supply-chain barriers still limit Canadian reuse data, while industry-average EPDs may not reflect the delivered kit. Ask for traceable, product-specific records rather than broad averages. Canadian manufacture alone does not prove equal whole-life impact.
FAQs
How can I find out whether salvaged steel suits my project?
Check its structural integrity and confirm it meets current engineering standards. In Canada, reuse often relies on project-specific initiatives rather than a standardized marketplace. Bring in a structural engineer early.
Consult CSA Z783:12 (R2021) for requirements on deconstruction and directing salvaged materials for reuse. Use Environmental Product Declarations to compare carbon impacts and help identify high-quality materials that suit your project and its carbon-reduction goals.
What should I do if product-specific EPDs are unavailable?
Use verified industry-average Environmental Product Declarations (EPDs) for hot-rolled or cold-formed steel. Where data is missing, One Click LCA provides generic datasets and regional averages. Carbon Designer 3D can estimate impacts during early design, when material quantities are still uncertain.
Always request Mill Test Reports and recycled-content documentation to support embodied-carbon reporting and meet procurement requirements.
How can I design my steel building for future reuse?
Plan for design for disassembly (DfD) from the start. Use simple, standardized designs and reversible fasteners, and avoid permanent bonds that are hard to separate. This lets components be taken apart and recovered at the end of a building’s service life instead of going to landfill.
Pre-engineered systems often support DfD because they’re frequently designed for easier assembly and later deconstruction.